Abstract
Background
Men, particularly those living in disadvantaged areas, are less likely to participate in weight management programmes than women despite similar levels of excess weight. Little is known about how best to recruit men to weight management interventions. This paper describes patient and public involvement in pre-trial decisions relevant to recruitment and aims to report on recruitment to the subsequent men-only weight management feasibility trial, including the: i) acceptability and feasibility of recruitment; and ii) baseline sample characteristics by recruitment strategy.
Methods
Men with BMI ≥30 kg/m2 and/or waist circumference ≥ 40 in. were recruited to the feasibility trial via two strategies; community outreach (venue information stands and word of mouth) and GP letters, targeting disadvantaged areas. Recruitment activities (e.g. letters sent, researcher venue hours) were recorded systematically, and baseline characteristics questionnaire data collated. Qualitative interviews (n = 50) were conducted three months post-recruitment. Analyses and reporting followed a complementary mixed methods approach.
Results
105 men were recruited within four months (community n = 60, GP letter n = 45). Community outreach took 2.3 recruiter hours per participant and GP letters had an opt-in rate of 10.2% (n = 90/879). More men were interested than could be accommodated. Most participants (60%) lived in more disadvantaged areas. Compared to community outreach, men recruited via GP letters were older (mean = 57 vs 48 years); more likely to report an obesity-related co-morbidity (87% vs 44%); and less educated (no formal qualifications, 32% vs 10%, degree educated 11% vs 41%). Recruitment strategies were acceptable, a sensitive approach and trusting relationships with recruiters valued, and the ‘catchy’ study name drew attention.
Conclusions
Targeted community outreach and GP letters were acceptable strategies that successfully recruited participants to a men-only weight management feasibility trial. Both strategies engaged men from disadvantaged areas, a typically underserved population. Using two recruitment strategies produced samples with different health risk profiles, which could add value to research where either primary or secondary prevention is of interest. Further work is required to examine how these strategies could be implemented and sustained in practice.
Trial registration
ClinicalTrials.gov: NCT03040518, 2nd February 2017.
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Find the latest articles, discoveries, and news in related topics.Background
The combined prevalence of overweight and obesity is higher in men than women in the UK [1, 2], but men are less likely to participate in weight management programmes [3,4,5]. This phenomenon is not exclusive to weight control, with men often underrepresented in health behaviour change interventions [6, 7]. Using gender-sensitised language for health-related communication targeted at men is in line with Men’s Health Forum (a men’s health charity) guidance [8]. However, recent efforts to tailor language and imagery in advertising for mixed-gender physical activity and weight management interventions, to boost participation of men, have been largely unsuccessful [9, 10]. Qualitative evidence suggests that many existing weight management services are viewed by men as incompatible for their needs [11, 12]. To appeal to men more broadly, systematic review evidence suggests that recruitment strategies designed specifically to engage participants in men-only weight management interventions are required [3]. The need for recruitment strategies that build trust and rapport with men, and are congruent with masculine identities, has been documented [13,14,15,16].
Targeted recruitment to gender sensitised interventions delivered within sporting contexts have drawn on the appeal of sports clubs to engage men [17,18,19,20,21]. For instance, recruitment strategies employed in the Football Fans in Training (FFIT) weight management randomised controlled trial included advertisements on club/fan websites, in-stadia advertising, engaging supporters’ groups, local and national media coverage, workplace advertising and in-person match-day recruitment drives, with a team of fieldworkers supporting the recruitment of 1080 men across 13 clubs within four months [20]. A community-based physical activity programme targeting inactive men (Men on the Move) also employed a comprehensive range of recruitment strategies, adopting a strengths-based approach based on creating trust, rapport, and meaningful relationships with men [22]. Specific recruitment strategies included text and email invitations via existing databases, website advertising and social media, a local media campaign, General Practice (GP) referral and snowballing, with 927 men recruited within two weeks across 8 counties and 30 host venues [23]. These examples demonstrate the value in using coordinated, well-resourced, gender-sensitive approaches to recruiting men to weight management and physical activity interventions.
In contrast, recent UK and US based men’s weight management studies struggled to meet recruitment targets [24, 25]. Moreover, the socioeconomic distribution of research samples is frequently skewed in favour of the well-educated and advantaged, with recruitment of disadvantaged men particularly challenging [4, 23, 25,26,27,28]. For example, whilst two men-only weight-loss trials reported efficacy at 6 months; only one participant (of 65) recruited for the SHED-IT trial in Australia resided in the most disadvantaged quintile area [28], and the sample recruited for the Rethinking Eating and FITness (REFIT) intervention in the US was highly educated (83.2% university educated) [26]. Building on REFIT, the Gutbusters trial sought to recruit less educated men; but after initial poor recruitment rates, altered the inclusion criteria to include men from any educational background, resulting in another highly educated sample (80.4% university educated) [25].
The social construction of masculinities depends on the social context of men’s lives, and intersects with socioeconomic factors [29]. One reason some men from lower socioeconomic circumstances may be less likely to participate in weight management is the preservation of traditional hegemonic masculine traits such as denying vulnerability or weakness, the need to appear strong, resilient or in control, and reluctance to seek medical assistance [30, 31]. Weight loss itself can be viewed as a feminine space [32], and dieting a woman’s domain [33]. Whilst the innovation of gender-sensitised interventions has increased the appeal of these types of interventions to many men, overcoming strong notions of traditional masculinity, particularly amongst those from lower socioeconomic circumstances, remains a challenge.
Interventions not tested for effectiveness across the socioeconomic spectrum may augment inequalities – conflicting with policy highlighting health inequalities as a key priority [34]. Low socioeconomic status is predictive of poor diet, physical inactivity, and increased risk of morbidity and premature mortality [35,36,37,38]. For example, the average life expectancy of men from birth in the most deprived decile areas in Scotland is 13 years shorter than men born in the least deprived (69.7 vs 82.7 years), with this difference less pronounced in women (75.7 vs 85.3 years) [39]. Furthermore, the relationship between socioeconomic status and health outcomes is more strongly mediated by poor diet and physical inactivity in men than in women [40]. Men from more disadvantaged areas, are therefore not only the least likely to access support to manage their weight [4, 25,26,27,28], but are often the population that would benefit most from support.
Evidence exists for successful recruitment of men from disadvantaged areas in contexts other than weight management. The Texting to Reduce Alcohol Misuse study recruited 825 men from disadvantaged areas through GP registers and community outreach strategies [41]. Previous work by the same authors concluded that recruitment via primary care alone may miss some men from the target group (harmful drinkers) that could benefit from intervention [42]. Use of both recruitment strategies allowed for broad reach, with community outreach inclusive of men that may not have otherwise engaged or be registered on GP lists [41, 42]. These strategies have also shown promise in recruiting men (n = 69) with obesity that drink heavily to a text message based study [43].
Successful recruitment strategies for men-only weight management interventions that specifically target men from disadvantaged communities or from across socioeconomic groups are required. In particular, limited evidence exists for recruitment of men to programmes not delivered within sporting or physical activity contexts, such as remotely delivered interventions using technology (e.g. text message). Detailed reporting of recruitment methods, challenges and successes, as well as participant’s perspectives of the strategies employed, is essential to understand how to better engage men living in disadvantaged areas. This paper describes patient and public involvement in pre-trial decisions relevant to recruitment and aims to report on recruitment to the subsequent men-only weight management feasibility trial, including the: i) acceptability and feasibility of recruitment; and ii) baseline sample characteristics by recruitment strategy.
Patient and Public Involvement in pre-trial decisions
Patient and Public Involvement (PPI) and stakeholder involvement in Game of Stones [44] was in line with recommendations for involvement of target group representatives and key stakeholders at all stages of research from study design to dissemination [45]. Prior to the trial commencing, men with obesity were consulted on matters relevant to recruitment, including the study name selection, development of recruitment materials and the recruitment strategies to be employed.
Recruitment materials
Researchers met men with obesity (n = 6) on a one-to-one basis to review the study materials (GP invitation letter and study information leaflets) to ensure the language used was appropriate and understandable. These individuals were recruited through researcher contacts including Men’s Shed (www.menssheds.org.uk/) members (n = 2), men who had previously taken part in the FFIT programme (n = 2) [20], a former National Health Service (NHS) weight management programme participant (n = 1) and a community worker who works with men in disadvantaged areas (n = 1). The researchers took notes during these meetings to capture the feedback gained and, where appropriate, changes to the study materials were made. The phrase Are you a man who wants to lose weight? was deemed appropriate by PPI to appeal to men (Fig. 1).
Game of Stones Study Recruitment Poster/Flyer. Should not be reproduced without the permission of the study Principal Investigators: p.m.hoddinott@stir.ac.uk and stephan.dombrowski@unb.ca
Study naming
An initial list of 91 study names was collated from suggestions made by men with obesity, men’s health charities, study co-investigators and University of Stirling staff. The Men’s Health Forum in Ireland then gained PPI email feedback on the list of study name suggestions from 75 men from a range of backgrounds across Ireland including members of; Men’s Sheds; a young men’s project; a lesbian, gay, bisexual and transgender support group; a rural farmers project; a separated father’s support group; sporting clubs, and users of the Men’s Health Forum in Ireland’s online resources. Key considerations for the selection of the study name put forward by these 75 men included to; i) avoid stigmatising language such as the word ‘fat’; ii) avoid words associated with women’s programmes like the word ‘slimmer’; and iii) be cautious about being too smart, for example younger men liked the name suggestion ‘W8M8’, but this suggestion was poorly understood by older respondents. From the initial long list of suggestions, the five most popular study names amongst the 75 respondents were ‘Game of Stones’, ‘Guts 2 Lose’, ‘tXtMEN’, ‘Lose it or Lose Out (LILO)’ and ‘Lean Mean Texting Machine’. Based on the considerations put forward by the men, the latter two suggestions were removed due to some reservations about the use of the word ‘lean’ and the potential negative focus of ‘Lost Out’. The remaining three most popular study names were voted on by attendees at a pre-trial Stakeholder Workshop (n = 27, including 8 PPI representatives). The workshop details, which discussed issues besides recruitment, are available elsewhere [39]. ‘Game of Stones’ received the most votes at the Stakeholder Workshop and was selected as the study name.
Focus group in trial set-up period
An audio-recorded focus group with men (n = 5) living in disadvantaged areas was conducted. The aim of the focus group was to explore men’s views on the planned recruitment strategies and to inform the research team’s approach to selecting venues to recruit men living in disadvantaged areas. Focus group participants were recruited through a researcher community link. Focus group participants were, on average, 52 years old (range 32–58), had an average of 1.8 household members (range 1–3) and four were classified as overweight or obese. All men lived in an area classified by the Scottish Index for Multiple Deprivation (SIMD; area-based index that allocates scores based on income, employment, housing, health, education and access to communication) as living within the most deprived quintile area (SIMD 1). The researcher used a focus group plan and topic guide to steer the discussion and used recruitment materials (e.g. the draft GP participant invitation letter) to support the questions asked. This focus group plan and topic guide is published elsewhere [44].
Key themes raised in the focus group regarding recruitment within disadvantaged areas centred around researcher safety, scepticism of unfamiliar people, the importance of trust and masculinity as a barrier to participation.
Community recruitment and safety
Focus group participants warned researchers to be cautious about how they approached men in the community. Some felt that men would deliberately ‘body swerve’ researchers attempting to recruit from within public spaces, often because they would assume that they are ‘wanting my debit card’ and that ‘there’s going to be a cost’. They also expressed concern about researcher safety, joking that one possible outcome was to get ‘your c**t kicked in [Laughter]’. In particular, participants advised that on-street approaches would be unwelcome because they would ‘think you were from the social [government department responsible for benefits provision]’. On-street approaches were felt to be particularly ineffective or ‘dodgy’ within more disadvantaged areas.
‘It’d probably work some place like in [advantaged area], but in the schemes [disadvantaged areas] you’d just get ridiculed’.
Relationships, trust and familiarity
Focus group participants felt that a lack of relationship with the researcher could be a barrier to the recruitment of men from more disadvantaged areas due to ‘issues with trust and reassurance’. They suggested that going to ‘the heart of communities’ by recruiting within local spaces and community centres and engaging with local, trusted, staff would be the most effective way to build-up relationships. Moreover, masculine identity was viewed as another major barrier to participation, which may be at least partially broken down if recruiting within environments that men are comfortable in.
‘See you’ve got this [area name], everybody’s a hard man and I’m not doing that’s stuff for wimps and all that, but I think if you get them in their own environment, like i.e. this place [local community centre], it would be a lot better’
The importance of trust and relationships, as well as listening to and consulting with potential participants was viewed as particularly important; otherwise sceptical community members may just ask; ‘what’s the con?’
Methods
Game of Stones was a three arm men-only weight management feasibility randomised controlled trial with a Short Message Service (SMS) intervention, with and without financial incentives, in comparison to waiting list control for SMS. The possibility (1 in 3 chance) of being randomised into the intervention group that included a financial incentive component was mentioned within the recruitment materials, but to minimise the risk of disappointment bias upon randomisation, no further information on the incentives (e.g. amount of incentive available) were provided during recruitment. Detailed information on interventions, methods and results are published elsewhere [46]. This paper reports secondary mixed-methods data that focuses on trial recruitment only. To assess the feasibility of the recruitment strategies, a target of 105 men within a 4 months period was pre-specified as one of the criteria for progression to a full trial. Men aged 18 or over, with an objectively measured Body Mass Index (BMI) ≥30 kg/m2 and/or a waist circumference of ≥40 in. were eligible to participate. Further eligibility criteria are reported elsewhere [44]. Prior research, targeting disadvantaged Scottish men to SMS interventions to support reducing alcohol consumption [41,42,43], helped inform the community outreach and GP register strategies used in the current study. Participants were recruited by a male and a female researcher (MM and RS) from two Health Boards (healthcare providers responsible for specific geographical areas) in Scotland selected to cover disadvantaged urban, suburban, town and more rural populations. Participants were not actively made aware that disadvantaged areas were being targeted and level of disadvantage was not a study eligibility criterion.
Community outreach
Researchers targeted free to access venues in more disadvantaged areas (i.e. SIMD 1–2) and liaised with venue managers to negotiate times and locations for recruitment activities. Examples of these contacts included community engagement staff at supermarkets, link workers at community centres and council premises staff (e.g. office facility) responsible for reception areas with frequent passers-by. Community recruitment was conducted via study information stands manned by researchers at supermarkets, council workplaces, hospital foyers, gyms and community centres. When passers-by showed interest, researchers provided an information leaflet, discussed the study, answered questions and asked for interested men’s contact details to confirm or arrange face-to-face appointments. In addition, some word of mouth recruitment occurred via community members who saw the study advertised, researcher community links (e.g. local voluntary organisation staff) and information leaflets placed in venues that men may visit (e.g. gambling shops and barbers).
As this was an individually randomised controlled trial, efforts were made to minimise the risk of contamination between the three trial groups. For example, when recruiting within community venues, researchers attempted to avoid recruiting potentially eligible men that were together and did not recruit from existing men’s groups. Community recruitment activities were undertaken during all hours and days so that a range of men including those that work full-time or part time hours, shifts or nightshifts, and unemployed or retired individuals had the opportunity to participate. A researcher assistant pool of ten postgraduate student and staff recruiters was established so that recruiting researchers could always work in pairs to ensure researcher safety and accommodate concurrent interest at information stands. University of Stirling’s safe working practice guidelines were followed.
GP register letters
The NHS Research Scotland Primary Care Network (NRSPCN), an organisation that supports primary care research operating in Scotland, provided GP practice list sizes, with demographic data on the proportion of patients registered for each SIMD quintile. From this list, the research team selected practices located within more disadvantaged areas (i.e. SIMD 1 and 2) and NRSPCN invited these practices to participate in the study. Men on the practice lists with a documented BMI of 30 kg/m2 or higher were sent a GP practice headed invitation letter and study information leaflet. Interested men then either contacted the research team directly or returned a freepost opt-in reply. When it was not possible to contact men showing interest to arrange a face-to-face appointment, a reminder letter was posted from the research team asking them to get in touch if they were still interested in participating.
Quantitative data collection
Researchers systematically recorded all recruitment activities such as the number of GP invitation letters sent, hours spent at community venues, number of information leaflets distributed, and number of interested men’s contact details gained. Following informed consent, participant characteristic information (i.e. age, number of co-morbidities, education level, ethnicity and marital status) were gained through self- report questionnaires, and researcher conducted objective measures (i.e. weight, height and waist circumference) at the assessment visit. Full details of the quantitative data collection procedures are reported elsewhere [44].
Qualitative data collection
During the feasibility trial, semi-structured face-to-face interviews were audio-recorded and transcribed with intervention group participants three months post-randomisation (n = 50 of 69 randomised; 7–61 min, median = 23 min). Wait-list control participants did not have interim appointments. Some (n = 6; 7–18 min, median = 11 min) were interviewed about their experiences, including recruitment, at a 12 months appointment post-randomisation. The two researchers (MM and RS) that led recruitment conducted the interviews at venues and times convenient for participants, after quantitative data collection at scheduled assessments. Topic guides covered several topics relating to study acceptability and recruitment. The qualitative methodology is reported in detail elsewhere [44].
Analysis
Quantitative community recruitment data were summarised by site, including venue SIMD quintile, researcher time spent at venues, and the numbers of men participating in each stage of the recruitment process (taking a leaflet, assessment for eligibility and randomisation). GP recruitment data were summarised similarly, including practice SIMD quintile, number of invitations sent, the proportion who opted into the study, and the numbers screened for eligibility and randomised. Descriptive summaries of the baseline characteristics of randomised men were tabulated with the number of non-missing responses, mean and standard deviation reported for continuous variables and numbers with percentages reported for categorical variables. Characteristics were compared by recruitment strategy (community v GP) using two-sample t-tests for continuous variables and chi-squared tests for categorical variables. Analysis was carried out using Stata version 13 (StataCorp LP, Texas, USA).
Qualitative interview verbatim transcripts were entered into QSR NVivo (v12) and analysis was informed by the framework approach [47], with independent coding conducted by four researchers (MM, RS, EC and NG). Charting and visualisation techniques were used in research team meetings to ensure robustness and to facilitate the interpretative analysis that, for the purpose of this paper, focused on experiences of recruitment. Matrix coding queries explored SIMD and recruitment strategy to establish patterns in the data and to identify any disconfirming cases that could provide insights to the analysis. The analysis sought to understand variation in views and experiences. Extracts were labelled with anonymised participant number, recruitment strategy (Community or GP) and participant SIMD postcode area. The quantitative and qualitative results have been synthesised narratively in line with a complementary mixed methods approach [48].
Ethical issues
Written consent to take part in the research (including an optional audio-recorded interview) was sought when men attended the baseline appointment prior to randomisation and consent was reaffirmed verbally prior to the interviews. Ethical approval was obtained from the North of Scotland Research Ethics Service (Ref: 16/NS/0120). NHS Research and Development approval was also obtained (Ref: FV974). The feasibility randomised controlled trial that the secondary data analysis in this paper is linked to was registered on ClinicalTrials.gov (Identifier: NCT03040518) on 31st January 2017.
Results
Feasibility randomised controlled trial
Feasibility of the recruitment strategies was demonstrated by recruiting and randomising 105 men within four months (between 1st March 2017 and 16th June 2017) by two researchers via community outreach (n = 60) and GP practices (n = 45). More participants were recruited through community outreach due to the time taken for some GP practices to agree to participate and screen practice lists within the pre-specified 4 months window.
Community recruitment
In total 87 men in the community showed interest in participating and gave their contact information to researchers, of which 60 (60/87, 69.0%) eligible men were randomised. Researchers spent 97.5 h at information stands in 14 community venues, yielding 42 randomised participants. An average of 2.3 h was spent at information stands per participant randomised, not including preparatory work such as time spent negotiating with venue managers to gain permissions or travel. The remaining ‘word of mouth’ community recruited participants (n = 18) heard about the study through friends, family, sports workers and community organisations, or by picking up leaflets left in local venues. More detailed information on word of mouth community recruitment can be found in the full study report [44]. Table 1 summarises community recruitment. Venues were mostly in disadvantaged areas and covered urban, town and more rural areas. The venues in less disadvantaged postcodes were a “Do-It-Yourself” hardware store and a sports centre.
GP recruitment
Overall, 33 practices were invited (n = 13 in Site A, n = 20 in Site B) and five practices (n = 4 in Site A, n = 1 in Site B) agreed to participate. Two further GP practices (n = 2 in Site B) expressed an interest in participating towards the end of recruitment but were not required as the study was almost full. Table 2 summarises recruitment via GP practices including the number of study invitation letters sent out, opt ins received, and participants randomised across the participating practices. 10.2% (90/879) of men sent study invitation letters opted in, with 45 subsequently randomised. Opt-in rates varied between practices (4.9–14.6%). Some men opted in after recruitment targets were achieved, and therefore were not included in the study (n = 37), whilst others that opted in did not attend an assessment after being invited (n = 7) or were ineligible (n = 1). Recruitment via GP letters was time consuming to set up (i.e. practices agreeing to participate and screening of practice lists) in relation to the fixed recruitment start date and 4 month recruitment target.
Characteristics by recruitment strategy
Table 3 summarises the characteristics of participants by recruitment strategy. Men recruited via GP letters were on average older (mean = 57.1 years) compared to community recruits (mean = 48.3 years), p < 0.01; and more GP recruits reported having at least one co-morbidity (39/45, 86.7%) compared to community recruits (26/59, 44.1%), p < 0.01. Men recruited via GP practices were more likely to report high blood pressure (30/45, 66.7%) than community recruits (18/59, 30.5%), p < 0.01. Both recruitment strategies yielded participants from across the socioeconomic spectrum, with 29 of 45 (64.4%) GP recruited participants living in more disadvantaged SIMD 1 and 2 areas compared with 33 of 59 (55.9%) community recruits, p = 0.38. GP recruits more frequently reported having no formal qualifications (14/44, 31.8%) than community recruits (6/59, 10.2%), and men recruited via GP letters reported less education to degree level (5/44, 11.4%) compared to community recruits (24/59, 40.7%), p < 0.01.
Qualitative interviews
Study name
The study name, Game of Stones, was viewed as a source of amusement and intrigue which caught the interest of participants, their families and friends. One participant stated that the study name helped set Game of Stones apart from ‘any other Weight Watchers slimming club’, with another identifying a ‘laddish undercurrent of stones’ within the study name. For some, the study name acted as an initial ‘hook’ that led to their eventual recruitment.
Game of Stones it's quite a catchy title so it does draw your attention and you want to see what it's about. (220045, Community Recruit, SIMD 2)
Recruitment tagline
The fact that the information leaflet for Game of Stones targeted men and asked, ‘Are you a man who wants to lose weight?’, resonated with some participants. The straightforward, matter of fact process of self-identifying as a man who wanted to lose weight appealed.
But it’s really understated the fact that guys want to lose weight……. So I think I saw that and I was like, yeah, this is me 100 %, don’t really know what it is, as long as you’re not asking me to not eat completely, then I think yeah, 100 %. Yeah, that tagline, it works because I’m a man and you want to lose weight, that was just it, factual. (120017, Community Recruit, SIMD 3).
Participants therefore felt that both the study name and the direct style of the promotional materials played a role in their recruitment to the study. They viewed Game of Stones as a study specifically for them; ‘a men’s thing’.
Trust and familiarity
Trust and familiarity played a role in the successful recruitment of many participants. Men who received a study invitation letter from their GP believed they had been identified as a potential participant with good reason, since the practice staff knew them and their ailments well.
The doctor's seeing you and he knows you've got high blood pressure, he knows you've got overweight problems/issues, so really he's channelling you to the right place. (110001, GP Recruit, SIMD 1)
Receiving the study invitation from a trusted source whom participants had a relationship with, potentially built up over many years, was seen as significant. Endorsement from familiar local health professionals as well as the National Health Service seemed to legitimise and validate the invitation. For many, this seal of approval ‘made a bit of a difference’ and influenced their decision to participate.
The fact that it came through the GP, I thought kind of legitimised it a little bit, so that’s probably why I said yes to it, gave it a go, and the timing was good because I was looking to do something with this anyway. (110011, GP Recruit, SIMD 2)
Similarly, participants recruited in the community via word of mouth, felt that information being passed on by familiar and ‘friendly people’, such as local voluntary organisation staff, provided an element of trust that aided engagement. In contrast, trust needed to be established at first meeting with men recruited through encounters at community stalls. Participants’ views on recruitment often appeared to be shaped by the way they were recruited themselves. For example, positive reflections on being recruited after encountering researchers at stalls within community settings, confirming the pre-trial focus group findings that recruiting from familiar, local venues can put men at ease and help establish trust with the recruiter. Having the opportunity to ask questions about the program face-to-face during community recruitment was also valued.
…it's just more looking at the person explaining it to me directly then the person who is actually involved in the programme. (220039, Community Recruit, SIMD 1)
Place and context
Some community recruited participants alluded to how crucial the choice of venue may be in recruiting men in a manner congruent with their situation and motivations. For example, the foyer area in a large hospital was viewed as ‘ideal’, after all, they are ‘all about your health and wellbeing’. Similarly, in the context of a gym foyer area;
I suppose in one sense you're going to catch people who are going to the gym to try and lose weight, but also, you're going to catch people who are already motivated. (120030, Community Recruit, SIMD 2)
Indeed, if targeting the recruitment of men via the community on a larger scale, careful planning will be required in order to ‘find the places that they like the most’.
Privacy, embarrassment and a sensitive approach
For some, receiving a physical letter from their GP in the privacy of their own home allowed them to make a pressure-free decision about taking part in the study. Having the opportunity to discuss the study with their partner before making an informed decision was valued.
I think getting it through the door, and then actually [partners name] was there, we both had a wee chat about it and she said, why not, give it a go. Whether I'd have done that outside and brought the stuff back, I don’t know, but certainly when it was through the door and it was in there, it was through the GP, then, yeah, I think it made a bit of a difference, yeah. (110015, GP Recruit, SIMD 1)
Often, the GP letter acted as a stimulus for participants to act on their weight that they felt was required.
I got a letter through the post, and it was, right okay, maybe this is the thing that’s going to spark that motivation to actually do it, rather than just, maybe, think about it…… probably more the post than an email or a text coming through: getting a physical letter delivered through the post… (110024, GP Recruit, SIMD 5)
Some recruited through community venues suggested that a letter from their GP would have ‘slightly offended’ them or felt it would need to be ‘very subtle’. Others reflected that they would have ignored the letter or dismissed it as ‘junk mail’. These views may partly explain why a large proportion (89.8%) of men sent a GP letter did not opt into the study. Equally, some GP recruits suggested that they would have gone out of their way to avoid study information stands within community settings. A participant from a disadvantaged area described how strongly averse he would have been to the idea of approaching a community recruitment stall; ‘Never. I’d never go near it’. Some suggested, as in the pre-trial focus group, that they would automatically associate a researcher’s presence in public places with individuals canvassing for charities or trying to make sales. For others, approaching a stand advertising a weight loss programme within a public place, was perceived as potentially embarrassing or stigmatising.
I think even men approaching you, it would be in the back of their mind, it would be I’m advertising I’m overweight. You know, so I’ve not wanted to show myself off as a humpty dumpty. (220015, Community Word of Mouth Recruit, SIMD 4)
Summation
No single recruitment strategy was universally well-liked by participants. However, both methods generated a large amount of interest in the study and engaged men that perhaps just needed to come across an intervention they could identify with to prompt them into participation. As one participant put it;
I think you’ve got the balance right. If you’re doing through the GP referrals and ad hoc meetings at places. I think you’ve got the balance right there. And it’s... I didn’t find it intrusive. In fact, when I saw you, I came over and I thought, this is…maybe it was the trigger I needed. (220017, Community Recruit, SIMD 3)
Discussion
Recruiting 105 men within the target of 4-months to a weight management randomised controlled trial via community outreach and GP practice letters was feasible and acceptable to men from diverse backgrounds. Men from across the socioeconomic spectrum were recruited, and both recruitment strategies engaged men, with no one strategy suiting all. The importance of the study name, gender-sensitised language and tagline as a hook, as well as a sensitive approach, trust and familiarity in recruiting were qualitative themes. Compared to community outreach, more men recruited via GP practice letters had no formal qualifications, were not educated to degree level and had one or more obesity-related co-morbidity.
Interest was generated in this study, with 90 men (37 after the study was full) sent a GP letter opting in (see Table 2) and 87 men (see Table 1) encountering community outreach activities passing on their contact information. Of the interested men that researchers attempted to contact to invite to a baseline assessment (n = 140), the majority attended a baseline appointment, were eligible and randomised (n = 105). This study was relatively low burden for participants, with a maximum of four scheduled one-to-one researcher contacts over 12 months [46]. Individuals from disadvantaged groups may be less likely to participate in programs where the intervention or research procedures are burdensome [49]. Whilst some interventions targeted at men use physical activity and the appeal of sports settings [22, 50], remotely delivered individual interventions can be effective [51], less burdensome and may be more inclusive of men that do not wish to or are unable to attend groups, participate in physical activity or who are not sports fans.
The Game of Stones sample was more disadvantaged than most men-only weight management interventions [20, 25,26,27,28]. Disadvantage is linked to having reduced confidence and being less likely to seek health information [52], hence, recruitment strategies specifically targeting disadvantaged communities are required to recruit socioeconomically diverse samples. Men’s attitudes towards their own weight differs, with some more vulnerable to or aware of potential adverse experiences linked to their weight. Weight stigma primes some men with obesity to worry about others judging their appearance [53]. Being seen to approach a weight management recruitment stand in public may challenge men’s masculine persona, with qualitative data suggesting that some participants would have been embarrassed or put off by this. Trust in recruiters has been recognised as important elsewhere [54], and the invitation letter, coming from their own GP, reassured some of the studies validity. However, whilst a sensitive approach to recruitment is required, even when non-stigmatizing language is adopted (e.g. within GP letters), reference to body weight can provoke emotional reactions [55]. This is corroborated by some community recruits stating they may have taken offence at a GP letter inviting them to a weight management intervention. The Men on the Move physical activity study successfully recruited participants via a suite of community strategies, but concluded that more targeted approaches are required to engage a more disadvantaged population [23].
Targeted GP letter and community outreach strategies used in studies conducted by Crombie and colleagues recruited a high proportion of men from disadvantaged areas [41,42,43]. In the Texting to Reduce Alcohol Misuse (TRAM) study, GP letters were sent exclusively to men with a home postcode in the most disadvantaged quintile areas; and community venues selected in the most disadvantaged quintile areas [41]. In Game of Stones, whilst GP practices and community venues were targeted based on their postcode being in the two most disadvantaged quintile areas, all eligible GP register men were invited regardless of their home postcode. Varying the level of targeting (e.g. GP letters based on practice or invitee postcode), can help achieve a sample almost exclusively from disadvantaged areas (TRAM; SIMD 1, 636/825, 77.1%), or from across the socioeconomic spectrum with a majority from more disadvantaged areas (Game of Stones; SIMD 1&2, 62/104, 59.6%). Interventions using recruitment strategies that do not consider socioeconomic factors, invariably result in less disadvantaged samples that do not represent the burden of disease attributable to obesity [25,26,27]. Trials specifically targeting disadvantaged groups, or recruiting diverse samples allowing for assessment of intervention effects across socioeconomic groups, can be termed health equity relevant [56]. Analysis of intervention effectiveness across socioeconomic groups is seldom conducted [57], but may be particularly important for men from disadvantaged areas given inequalities for morbidity and mortality compared to women [39, 40].
The 10.2% GP letter opt in rate (see Table 2) observed in Game of Stones is comparable to other weight management trials recruiting via GP registers [4, 5]. Sex-specific information from the Lighten Up trial was available for one large GP practice, in which 7.4% (48/650) of men and 14.4% (101/700) of women invited participated [58]. Similarly, women were twice as likely to enrol (610/7164, 8.5%) as men (300/6785, 4.4%) when referred to weight-loss programmes via primary care [4]. The latter study also demonstrates that individuals residing in less disadvantaged areas (534/6318; 8.5%) are more likely to take up an offer to participate in weight management than those living in more disadvantaged areas (376/7631; 4.9%) [4]. This suggests that men, including those from disadvantaged areas, may be more likely to respond positively to GP invitations when interventions are targeted specifically for them, corroborating qualitative data indicating that men perceived Game of Stones as being for them, a ‘men’s thing’.
A recent systematic review suggests that telephone reminders for non-responders to study postal invitations may improve recruitment rates, but also noted the potentially substantial cost and workload of adding a phone call to the recruitment strategy [59]. Prior studies have used telephone reminders for non-responders [41] or used direct phone call invitations [60, 61] to successfully recruit disadvantaged groups. Actively following up on individuals who did not respond to the GP invitation letter could have resulted in a higher opt-in rate in the present study but would have added implications for scale up and sustainability.
Men recruited via GP letters were older and more likely to report having an obesity related co-morbidity than community recruits. Obesity related morbidities increase with age: with such men more likely to be registered at a GP practice, attend appointments, and have a documented BMI than their younger counterparts. High blood pressure, an asymptomatic risk factor in cardiovascular disease development [62], was significantly more prevalent in participants recruited via GP letters than community outreach. The overall average age (52.3 years) observed in Game of Stones is typical for weight management research, with recruitment of younger men challenging [9]. Community outreach may serve an important function in recruiting younger men for primary prevention of obesity related disease, whilst GP letters may be better suited to addressing secondary prevention once an obesity related morbidity has been diagnosed. Men often delay seeking support from health professionals until they are ill [63], with public health interventions that prevent ill-health a UK government policy priority [34].
Five GP sites (of 33 approached) from more disadvantaged areas agreed to invite their patients to participate in this study (with an additional two agreeing after recruitment targets were met), demonstrating sufficient buy-in from primary care providers to recruit men from disadvantaged areas. Primary care buy-in may be enhanced when interventions have previously demonstrated effectiveness within a fully powered RCT. Minimal workload was required from practice staff which may be relevant for future sustainability. It cannot be assumed that GP practice uptake in the present study will be reflected in future upscaling. NRSPCN involvement in engaging GP practices maximised research staff capacity for community outreach activities. However, community outreach activities were resource intensive, with a total of 97.5 researcher hours (see Table 1) spent in venues (over 2 h per participant randomised via this method). Some features of community recruitment, such as linking with community organisation and charity networks, may be more sustainable. Further work is required to establish the sustainability of both GP letter and outreach recruitment strategies.
Strengths and limitations
Extensive PPI, including men from the target population living in disadvantaged areas, addressed a gap identified in systematic reviews: that strategies for men’s weight management interventions are seldom designed with the target group they intend to recruit [64]. Two researchers with experience of community engagement led on recruitment, systematically recorded relevant information, informed individuals about the study and arranged study appointments, providing continuity. Interviews were conducted with most men attending an assessment at 3 months, allowing for the perspectives of a large and diverse group of participants recruited via both recruitment strategies to be considered. Studies seldom report recruitment strategies for behavioural interventions in detail, yet several have struggled to recruit men, particularly from more disadvantaged areas.
Limitations include the relatively small feasibility trial sample, thus interpretation of recruitment trends observed may not be generalisable. The sample of men recruited were predominantly white (91.4%), although this is more diverse than the population in Scotland [65]. Interviews were conducted with intervention group attendees at 3 months post-randomisation, but control group participants were asked for their views on recruitment 12 months post-recruitment, with the process potentially no longer fresh in their mind. Interview data were collected after completion of questionnaires and weight measures; thus, responses may have been framed by these activities. Participants may have provided socially desirable responses with favourable views on recruitment. The qualitative findings only reflect the views of men who enrolled on the study, limiting learning for expanding reach to men who did not opt into the study after receiving a GP letter or encountering community outreach activities. Thus, participant reflections on recruitment activities that successfully engaged them, are likely to be favourable. Receiving regular text messages will not appeal to all men and further research to explore how the reach of SMS interventions can be extended is required.
Assessment of the cost-effectiveness of the recruitment strategies was beyond the scope of this study. The extent to which the recruitment strategies may be implementable and sustainable in practice has not been established.
Conclusions
This study demonstrates that postcode area targeted community and GP letter recruitment can engage men from disadvantaged areas, a typically hard to reach demographic. The recruitment strategies used were acceptable to a diverse sample of men, recruited a high proportion of men living in disadvantaged areas and met a pre-specified recruitment rate to inform parameters for a future full trial. No single strategy suited all men, with the use of both strategies having the potential to maximise sample diversity, including for the primary and secondary prevention of obesity-related disease. The mixed methods approach highlights factors that contributed to success, the value of up-front investment in optimising recruitment processes with the target population, and the importance of language and adopting a sensitive approach to recruitment of men for weight management. Recruitment strategy decisions should be evidence based and involve input from target group members. Further work is required to examine how these strategies could be implemented and sustained in practice.
Availability of data and materials
The datasets used in the current study can be made available upon reasonable request with the corresponding author (MM) and Chief Investigators of the project (PH and SD). Detailed study information is reported elsewhere [44].
Abbreviations
- BMI:
-
Body Mass Index
- FFIT:
-
Football Fans in Training
- GP:
-
General Practice
- NHS:
-
National Health Service
- NRSPCN:
-
NHS Research Scotland Primary Care Network
- PPI:
-
Patient and Public Involvement
- REFIT:
-
Rethinking Eating and FITness
- SIMD:
-
Scottish Index of Multiple Deprivation
- SMS:
-
Short Message Service
- TRAM:
-
Texting to Reduce Alcohol Misuse
- UK:
-
United Kingdom
- USA:
-
United States of America
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Acknowledgements
We are grateful to: all men that contributed as PPI, participated in the pre-trial focus group or participated in the study. Colin Fowler from the Men’s Health Forum in Ireland, who helped facilitate PPI feedback on the study name. Hannah Collacott, who was employed as a research assistant at the Health Economics Research Unit, University of Aberdeen in 2016-2017, and facilitated some PPI feedback on the study materials. Nicola Glennie, who was undertaking a University of Stirling Master’s in Research placement and contributed to the analysis and interpretation of qualitative data. The Tayside Clinical Trials Unit who provided trial management support, specifically, Adrian Hapca who undertook statistical analysis and Fiona Hogarth who oversaw the study from a Clinical Trials perspective. Karen Stanton, Lorna Kerr, Karen Murray, Siobhan McDermott, Suzannah Hunter, who provided administrative support. The following postgraduate Masters students, who accompanied MM and RS when recruiting men in the community: Norelle Calder-Macphee, Ines Elenin, Lucy Gunatillake, Bryony Lang, Heather Renwick and Amy Spiteri. The prior work of Professor Ian Crombie and colleagues, University of Dundee, that helped inform the recruitment strategies used. Clinical, community and academic networks who advised our team on many aspects of this study, including: NHS Research Scotland Primary Care Network and the GP practices involved, Alliance Scotland, Community Health Councils, Health Centres and community venue managers. Game of Stones co-investigators: Alison Avenell, Frank Kee, Michelle McKinley, Martin Tod and Marjon van der Pol.
Funding
This study was funded by a National Institute of Health Research Public Health Research award: NIHR PHR: 14/185/09. This paper presents independent research commissioned by the NIHR. The funder had no role in the design of the study or the collection, analysis, and interpretation of the data. The views and opinions expressed by authors in this publication are those of the authors and do not necessarily reflect those of the NHS, the NIHR, MRC, CCF, NETSCC, the Public Health Research programme or the Department of Health. The views and opinions expressed by the interviewees in this publication are those of the interviewees and do not necessarily reflect those of the authors, those of the NHS, the NIHR, MRC, CCF, NETSCC, the Public Health Research programme or the Department of Health. The Nursing Midwifery and Allied Health Professionals Research Unit is funded by the Chief Scientist Office of the Scottish Government Health and Social Care Directorate.
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MM undertook PPI activities with men from the target group, conducted the pre-trial focus group, undertook study recruitment, facilitated quantitative data collection, conducted qualitative interviews, contributed substantially to the analysis and interpretation of the quantitative and qualitative data, and led on writing this manuscript. SD co-led the study with PH as joint Chief-Investigators, including overseeing the overall conduct of the study. RS undertook recruitment, facilitated quantitative data collection, conducted qualitative interviews and contributed to data interpretation. EC contributed to the analysis and interpretation of the qualitative data. PC was a Co-Investigator, linked to PPI networks and contributed to the interpretation of the findings. AE was a Co-Investigator, oversaw statistical analysis and contributed to the interpretation of findings. CG was a Co-Investigator, facilitated PPI from former FFIT participants and contributed to the interpretation of findings. MG was a Co-Investigator and contributed to the interpretation of findings. FH was a Co-Investigator, oversaw qualitative data collection and analysis, and contributed to the interpretation of findings. CJ was a Co-Investigator, supported the participant recruitment tracking system, facilitated GP letter sending and management and contributed to the interpretation of findings. PH co-led the study with SD as joint Chief-Investigator, including overseeing the overall conduct of the study. All authors have read and approved the manuscript.
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MM was a research assistant at the Nursing, Midwifery and Allied Health Professionals Research Unit at the University of Stirling during this project and is currently undertaking a PhD within the Physical Activity and Wellbeing Research Group at Curtin University.
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Written consent to take part in the research (including an optional audio-recorded interview) was sought when men attended the baseline appointment prior to randomisation and consent was reaffirmed verbally prior to the interviews. Ethical approval was obtained from the North of Scotland Research Ethics Service (Ref: 16/NS/0120). NHS Research and Development approval was also obtained (Ref: FV974). The study was registered on ClinicalTrials.gov (Identifier: NCT03040518) on 31st January 2017.
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The following competing interests were declared by Co-Authors: Dr. Grindle reports the copyright to the Digital Narrative Approach is owned solely by Eos Digital Health Ltd. Dr. M. A. Grindle is managing director of Eos Digital Health Ltd. No other competing interest were declared.
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Additional file 1.
Game of Stones Three-month Qualitative Interview Topic Guide.
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McDonald, M.D., Dombrowski, S.U., Skinner, R. et al. Recruiting men from across the socioeconomic spectrum via GP registers and community outreach to a weight management feasibility randomised controlled trial. BMC Med Res Methodol 20, 249 (2020). https://doi.org/10.1186/s12874-020-01136-2
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DOI: https://doi.org/10.1186/s12874-020-01136-2