Abstract
Few rigorous studies provide a clear description of the methodological approach of developing an evidence-based implementation intervention, prior to implementation at scale. This study describes the development, mapping, rating, and review of the implementation strategies for the Care to Quit smoking cessation trial, prior to application in nine cancer services across Australia. Key stakeholders were engaged in the process from conception through to rating, reviewing and refinement of strategies and principles. An initial scoping review identified 21 barriers to provision of evidence-based smoking cessation care to patients with cancer, which were mapped to the Theoretical Domains Framework and Behaviour Change Wheel (BCW) to identify relevant intervention functions. The mapping identified 26 relevant behaviour change techniques, summarised into 11 implementation strategies. The implementation strategies were rated and reviewed against the BCW Affordability, Practicality, Effectiveness and cost-effectiveness, Acceptability, Side-effects/safety, and Equity criteria by key stakeholders during two interactive workshops to facilitate a focus on feasible interventions likely to resonate with clinical staff. The implementation strategies and associated intervention tools were then collated by form and function to provide a practical guide for implementing the intervention. This study illustrates the rigorous use of theories and frameworks to arrive at a practical intervention guide, with potential to inform future replication and scalability of evidence-based implementation across a range of health service settings.
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1 Introduction
Cigarette smoking among people diagnosed with cancer is associated with a host of adverse treatment-related outcomes such as increased toxicity and complications (Clark et al. 2007; Cowen et al. 2010; Merkow et al. 2009; Sørensen et al. 2002; van der Voet et al. 1998), cancer recurrence (Kenfield et al. 2011; Lammers et al. 2011; van Imhoff et al. 2016; Wyszynski et al. 2014) and cancer-specific and overall survival (Kelly et al. 2011; Smith et al. 2019; Zingg et al. 2011). Compared to quitting at diagnosis, continued smoking doubles the risk of death and can half median survival time for lung cancer patients (Cataldo et al. 2010). Numerous studies have demonstrated that smoking cessation after a cancer diagnosis can improve treatment outcomes, including survival (Al-Mamgani et al. 2014, Amato et al. 2015, Barnett et al. 2020, Chen et al. 2019, Karam‐Hage et al. 2014, Nia et al. 2005, Roach et al. 2016, Tabuchi et al. 2017, Warren et al. 2020). Other than tumour site and stage at diagnosis, abstinence from smoking is the strongest predictor of survival in patients with cancer who have ever smoked (Karam‐Hage et al. 2014).
The National Comprehensive Cancer Network (NCCN) (Shields et al. 2015), emphasised the importance of smoking cessation for cancer patients and establishment of an evidence-based standard of care including pharmacotherapy (e.g., Nicotine Replacement Therapy; NRT) and behavioural therapy (recommendation of 4 + sessions of 10–30 min over 12 weeks from a professional trained in smoking cessation in addition to brief physician advice). Australia’s peak multidisciplinary oncology society (i.e., COSA) for health care professionals (HCPs) recommends a three-step brief 3As (ask, advice, act) model of care implementable within oncology services that includes clear referral pathways for smoking cessation pharmacotherapy and multi-session behavioural therapy (COSA 2020). Embedding smoking cessation care requires a multidisciplinary approach and there is a call in the literature (Young et al. in press) for implementation trials to improve the standardisation and up-scale of evidence-based smoking cessation care in oncology services.
Prior to implementation of a multi-component trial, the UK Medical Research Council stipulates that the early development of strategies through reviewing literature and pilot work can increase the likelihood of successful implementation (Craig et al. 2008). A range of smoking cessation interventions are evident (e.g., electronic medical record (eMR) embedding, NRT opt-out approach), yet findings from within Australia indicate that staff-level barriers are most difficult to change, particularly when relating to addressing attitudinal and motivational barriers. Results from a national survey of 295 Australian oncologists show that the majority of respondents indicated a strong preference for smoking cessation care to be managed by other HCPs, with only 4% of medical oncologists and 0% of radiation oncologists preferring to manage care themselves (Day et al. 2018). A 2-page smoking cessation pathway increased screening and referral of up to 92% of cancer patients (Young et al. in press), yet variability across sites was influenced by HCPs perceived level of responsibility to intervene. Standardisation of care requires staff commitment, awareness, role allocation, and system-level changes for seamless integration (Geerligs et al. 2018). HCPs have also reported low self-efficacy to deliver brief smoking advice and patient resistance as impediments toe delivery of smoking cessation care (Day et al. 2018).
This methodological study describes the steps and approaches used to develop the implementation strategies for the Care to Quit cluster randomised controlled trial (Paul et al. 2021), which was established in collaboration with key stakeholders who directed the development from conception through mapping, rating, review and refinement of strategies and principles. This involved a structured plan to comprehensively address barriers to provision of smoking cessation care using the Theoretical Domains Framework (TDF) (French et al. 2012), a determinant framework, and the Behaviour Change Wheel (BCW) (Michie et al. 2011), which is a behavioural model aimed at characterising interventions within a system, matching the behaviour with intervention functions and policy categories (Michie et al. 2011). The TDF is used to describe determinants of behaviours, categoried into fourteen domains, to identify a target behaviour, and guide behaviour change interventions from planning through to evaluation (e.g. what to change). The BCW is a behavioural framework used to design behaviour change impementation strategies (e.g. how to change). The core element of the framework is based around the capability, opportunity, and motivation to enact the target behaviour (COM-B), influenced by nine possible intervention functions and seven policy types. It comprises three key steps for designing behavioural interventions: understanding the target behaviour, identify intervention options, and identify content, and implementation options. The application of the BCW APEASE criteria to the resultant implementation strategies produces a focus on actions which are expected to be feasible and to resonate with health professionals. Further, the standardisation of complex health service interventions by its functions (principles or objectives) is superior to standardisation by its form (mode of delivery) (Perez Jolles et al. 2019). This paradigm shift encourages prospective consideration of how implementation interventions can be adapted to improve intervention-context-fit, prior to being implemented at scale. For this paper, implementation interventions is defined as “interventions designed to change clinical practice behaviour and improve the uptake of evidence into practice” (French et al. 2012).
2 Methods
2.1 Aims and objectives
The aim of this study is to describe the scientific and methodological approach used to develop the implementation strategies of the Care to Quit trial, targeting staff at Australian cancer treatment services. The main objective is two-fold: first to reach consensus amongst key stakeholders about the barriers in their health service, and then to elicit perceptions of implementable strategies to overcome such barriers.
2.2 Design and setting
The Care to Quit stepped wedge cluster randomised trial is funded by the National Health and Medical Research Council and administered by The University of Newcastle, Australia. The trial is managed by a committee comprising academic researchers, governing authorities, and health service providers with behavioural, cancer and smoking cessation expertise (Paul et al. 2020, 2021) and will be rolled out across nine Australian cancer treatment services in metropolitan and regional New South Wales (NSW) and Victoria (VIC).
2.3 Materials and processes
The research team at the University of Newcastle (herein referred to as the “team”) conducted a scoping review to identify barriers and facilitators to the provision of smoking cessation care within cancer centres. The review was informed by prior work conducted by the team through staff surveys (Day et al. 2018), including patient interviews (Sherwood et al. 2017) using Australian and international smoking cessation guidelines (COSA 2020; Royal Australian College of General Practitioners 2021). From this, the team identified a list of barriers, which were summarised into themes. The development of the implementation intervention included several evaluation stages. We used the APEASE criteria to rate and review the implementation strategies with a group of key stakeholders prior to finalising the implementation strategies. The methods and results of the development process have been structured according to the BCW recommended stages and steps for implementation interventions (Michie et al. 2011) – see Table 1, and in accordance with the Template for Intervention Description and Replication (TIDIER) checklist (Additional File 1).
3 Results
3.1 Stage 1: Understand the behaviour
3.1.1 Define the problem in behavioural terms
The behavioural problem was identified as a lack of provision of smoking cessation care among cancer care providers within Australian cancer centres. The findings from the literature indicate that cancer care providers generally report high rates of asking patients about their smoking status, however the provision of advice or assistance for cancer patients to quit smoking is limited (Day et al. 2018; Derksen et al. 2020; Warren et al. 2013a, b; Warren et al. 2013a, b). Few cancer care providers make referrals to cessation support and commonly discuss smoking cessation medications (Day et al. 2018).
3.1.2 Select and specify the target behaviour
The target behaviour was identified as delivery of smoking cessation care using the brief Ask-Advise-Act (3As) smoking cessation model of care. The utilisation of the shorter 3As model is consistent with NSW, VIC, and National Comprehensive Cancer Network recommendations for evidence-based cessation support for patients with cancer (Shields et al. 2015), and allows delivery by a wide range of health professionals working in a variety of settings (Kaiser et al. 2018; Vidrine et al. 2013). Using a whole-of-service approach was determined as most suitable as patients often see a range of cancer care providers during their treatment. Service leaders were also considered important key stakeholders to endorse the approach.
The target behaviour requires that all treatment providers involved with the care of the cancer patient (oncologists, nurses, radiation therapists, pharmacists, and allied health professionals) at every consultation should:
-
Provide brief smoking cessation care to all cancer patients using the 3As: Ask, Advice, Act smoking cessation model of care. This will involve assessing and recording smoking status; give a personalised description of the specific benefits of smoking abstinence during and after treatment; and endorse use of evidence-based support such as telephone counselling and pharmacotherapy
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Offer referral to Quitline or local cessation support services, which are free of charge
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Prescribe or provide advice on pharmacotherapy options licensed for use in Australia such as Nicotine Replacement Therapy (NRT) or Varenicline (Champix), which are safe during treatment and subsidised via the Pharmaceutical Benefit Scheme (PBS), and
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Monitor progress.
3.1.3 Identify what needs to change
The scoping review identified 21 barriers to the provision of smoking cessation care at cancer centres, which were mapped to five of the six COM-B sources of behaviours (psychological capability, reflective motivation, automatic motivation, physical opportunity, and social opportunity) and 12 of the 14 TDF components (see Table 2). Barriers were then grouped into five themes identifying what needs to change.
3.2 Stage 2: Identify intervention and policy options
When rated against the six APEASE criteria (acceptability, practiability, effectiveness, affordability, side-effects, and equity), the intervention functions education, training, persuasion, environmental restructuring, and enablement were considered appropriate for the implementation intervention, while the intervention functions of incentivisation, restrictions, coercion and modelling were excluded. The selection was informed by the BCW guide which describes which intervention functions are considered effective for each of the COM-B components (see column 3 in Table 2). There were no additional policy categories identified as relevant for this study, and fiscal measures and legislation were not within the scope of the trial.
3.3 Stage 3. Identify content and implementation options
The team considered all possible techniques and arrived at 26 unique BCT’s considered promising to elicit behaviour change among cancer care providers. These are listed in the BCT column in Table 2. Relevant techniques derived from the BCW Taxonomy 1 (Michie et al. 2013), with a focus on techniques that were considered as implementable in busy clinical settings involving a variety or professional groups (goals and planning; feedback and monitoring; shaping knowledge; natural consequences; comparison of behaviour; associations; repetition and substitusion; comparison of outcomes; antecedents; identity; and self-belief). The five groups that were not feasible and appopriate within the scope of the trial, and thus not included, were: social support; reward and threat; regulation; scheduled consequences; and covert learning.
3.4 Identify mode of delivery
The team made a consensus-based decision to divide the 12-month intervention phase of the implementation intervention into three stages to allow for the foundations of each site to be in place, prior to moving into the more training and resource intensive part of the implementation intervention. The three-phased implementation intervention will focus on increasing staff capability, opportunity, and motivation to provide smoking cessation care to cancer patients at every consultation, involving all treatment providers.
To improve capability, we will educate clinicians about the consequences of continued smoking among patients with cancer and train them in the 3As cessation model of care. Educating clinicians will involve BCT’s such as presenting information about the health consequences from a credible source and highlighting the salience of these consequences. Training clinicians in smoking cessation care will involve instruction on how to perform the behaviour, demonstrations of the target behaviour, and behavioural practice/rehearsal with role-play exercises and prompts and cues to facilitate the target behaviour in patient encounters.
To improve motivation, we will use BCTs including information about others’ approval, reframing smoking behaviour with patients and verbal persuasions about capability for helping patients quit. This will include positive testimonials from patients and clinicians designed to vicariously expose cancer care providers who may not have experienced success in cessation care to the possible benefits and the value in persisting. Presenting evidence about the benefits of smoking cessation will enable to motivate clinicians.
To improve opportunity, BCTs including restructuring the physical and social environment will be employed to improve referral and prescription pathways. Increasing buy-in from service leadership may also help to enhance opportunities for smoking cessation care among clinicians.
The implementation intervention will involve multiple components and modes of delivery, noting that some strategies will overlap and may be impacted or adjusted due to COVID-19 requirements or implications, for examples face-to-face components may be delivered via webinars or other online modalities, and delivery will be, as mentioned earlier, tailored to local contexts (see Table 2). Having a flexible delivery approach is anticipated to enhance staff participation despite challenges resulting from the COVID-19 pandemic. It should also be noted that Telehealth alternatives have recently become more routine in oncology practice and the provision of smoking cessation care may be provided using this modality (Burbury et al. 2021; Paterson et al. 2020).
In stage 1, outreach visits will be delivered by a behavioural scientist with smoking expertise, a cancer clinician, and a Quitline counsellor, with evidence-based messages tailored to the professional role of the clinician and the patient group (tumour type, treatment outcomes) around benefits of cessation, multi-session behavioural support services offered via services such as Quitline, use of pharmacotherapy during cancer treatment, and importance of timing and framing of cessation messages. Visits will be conducted according to site preferences, with subsequent visits focusing on review of recent consultations and discussions around challenging cases.
Stage 2 will focus on identifying site champions and formation of a champion team at each site. It is envisaged that these teams comprise staff interested in driving and facilitating the implementation of the 3A smoking cessation model of care in their service.
In stage 3, site champions identified in Stage 2 will be supported by the team through a range of mechanisms including regular and ad hoc phone or video calls, with the aim to identify how to implement the 3As smoking cessation model of care within existing patient pathways to increase opportunities for smoking cessation support. Concurrently, a suite of evidence-based implementation strategies tailored to the needs of the individual site will be employed to build staff capability (e.g. skills, knowledge and confidence) to actively use cessation models of care / pathways and provide smoking cessation support for patients with cancer. The method of providing pharmacotherapy will vary as not all centres will be able to provide this directly to outpatients, thus the treating clinician may write a prescription that the patient will take to the pharmacy or a referral to the patient’s General Practitioner. Training will be supported by educational brochures for clinicians and patients, and reminders such as desktop prompts and scripts. Utilisation of patient journey maps may also occur, which is a common way to showcase the steps in the patient journey and highlight complexities around inter-departmental processes of care.
3.5 Results of rating and reviewing the Care to Quit implementation intervention against the APEASE criteria prior to implementation at scale
To ensure successful delivery of the implementation intervention, the eleven implementation strategies were rated and reviewed using the APEASE criteria with a group of nine principal and associate investigators prior to implementation. Stakeholders included two oncology service providers in NSW, one representative from the Cancer Institute NSW (CINSW), one academic with experience of smoking cessation and cancer care implementation trials, one tobacco treatment specalist consultant psychologist, one cancer systems innovation manager, two representatives from VIC Quitline, and a nurse practitioner at a cancer treatment centre. Strategies that were rated lower were discussed as a group with barriers and potential solutions noted in a summary sheet. The results of this process determined the Affordability, Practicality, Effectiveness and cost-effectiveness, Acceptability, Side-effects/safety, and Equity of the implementation intervention approach, prior to implementation at scale. Scheduling of time to perform the implementation strategies by one or more clinicians was generally rated lower than strategies that could be utilised anytime or without specific clinician input such as desktop prompts and scripts, CINSW online training modules and educational videos from known experts/clinicians (see Table 3).
3.6 Mapping the principle of the implementation intervention by form and function
Using methods identified by Hawe et al. (Hawe et al. 2004), the research team identified five core implementation intervention principles, which were to (1) educate clinicians about the benefits of smoking cessation care for treatment outcomes and quality of life, (2) increase provision of smoking cessation care: at all stages of treatment, (3) increase the provision of smoking cessation care for all patients who smoke regardless of smoking related cancer and for recent quitters, (4) increase provision of smoking cessation care: specifically, using the 3As model of care, and (5) to increase the provision of smoking cessation care: specifically, referrals for evidence-based treatment i.e. combined counselling (Quitline or other referral) and pharmacotherapies (i.e. combination NRT, varenicline).
The research team then mapped each principle by form and function (see Table 4), with implementation interventions standardised by function to provide a more flexible and tailored delivery approach. To facilitate easy, timely and sustained clinical access to intervention material, while also allowing flexible training options, the team developed a project website, hosted on an open-source platform, with built-in site-specific tailoring modalities. Existing content, largely material from the CINSW (Cancer Institute NSW 2021) was identified with permissions sought to use it in the study (and website). Where desired content was unavailable from existing sources, the research team identified new content options to be developed, and worked with key stakeholders to develop these. The approach of the general practitioner was included to showcase and highlight smoking cessation work in the primary health sector and improve continuity of care across primary, tertiary and community sectors.
4 Discussion
This methodological study aimed to describe the theory-driven and evidence-informed process used to develop the Care to Quit implementation intervention in collaboration with key stakeholders. The approach held focus on key barriers impeding provision of smoking cessation care at the cancer treatment services and identifying implementable strategies to overcome such barriers. Collaborative evaluative meetings with key stakeholders ensured that contextual, organisational and staff barriers, particularly motivation and attitudinal barriers, were addressed within three distinct stages of the trial. Mapping the principles of the intervention to the domains of the TDF and relevant COM-B sources of behaviours provided a theoretical basis for characterising targeted behaviours requiring change within the health system context.
Knowledge was identified as the most prominent staff barrier to providing smoking cessation care. Key stakeholders identified that oncology HCPs lack knowledge about the benefits of smoking cessation care, referral pathways, and methods for prescribing pharmacotherapy. The BCW postulates that education, training, and modelling are required to improve knowledge and distinguishes education as a form of imparting knowledge while the term training is a form of imparting skill (Michie et al. 2011). In the current study, strategies to improve education include expert and patient videos, leaflets, and evidence from studies on the importance of smoking cessation for people with cancer. The mode of delivery was acceptable, but HCPs questioned the sustainability of training due to staff turnover, busy workloads and identifying who would train existing staff in each cancer centre. Indeed, countless tools and platforms have been developed to engage HCPs. The main trial will integrate training through an online platform that will continually be available throughout implementation and in conjoint with local government agencies, has the potential to become an ongoing resource for HCPs throughout Australia.
Motivation and staff attitudes towards smoking cessation care also influenced the acceptability of the implementation strategies. A clear barrier to care resultant from the literature (Chang et al. 2017; Charlesworth et al. 2019; Conlon et al. 2017; Coovadia et al. 2020; Day et al. 2018; Derksen et al. 2020; Lina et al. 2016; Luxton et al. 2019; Ma et al. 2016; Price et al. 2019; Schnoll et al. 2006; Singer et al. 2019; Sutton et al. 2013; Warren et al. 2013a, b; Warren et al. 2013a, b; Warren et al. 2015; Weiss et al. 2020) and evaluation discussions was the perceived lack of time for addressing smoking cessation. Belief that patients lack the motivation to quit (Charlesworth et al. 2019; Conlon et al. 2017; Gosselin et al. 2011; Ma et al. 2016; Price et al. 2019; Sarna et al. 2001; Simmons et al. 2009; Warren et al. 2013a, b; Weaver et al. 2012; Weiss et al. 2020) is commonly reported, while HCPs have often believed that patients would be resistant to smoking cessation treatment (Chang et al. 2017; Day et al. 2018; Derksen et al. 2020; Luxton et al. 2019; Ma et al. 2016; Price et al. 2019; Schnoll et al. 2006; Simmons et al. 2009; Warren et al. 2013a, b; Warren et al. 2013a, b; Warren et al. 2015; Weaver et al. 2012). The trial initially devotes an extended period to engage with HCPs, allowing the researchers to address the motivational and commitment factors that impede care. To overcome the time shortage HCPs face, small group interactive discussions during the initial phase of the Care to Quit trial will provide relevant, tailored, and streamlined education that is anticipated to require a minimal time commitment by being embedded in existing training and engagement opportunities where possible, with key cessation information accessed via optimised administrative systems. Engagement with key leaders and hospital managers early will be vital. The alignment with hospital standards, using peak oncology agencies (CINSW) and services (e.g., Quitline) are strong facilitators for sustainable change (Rankin et al. 2015). Equally important is the engagement with staff from varying roles and levels to ensure that the development and application of strategies is relevant and applicable to each context.
Although many studies have used a theoretical framework and behavioural theory to guide larger implementation trials, few papers provide sufficient guidance about the work conducted to develop the implementation intervention and level of stakeholder engagement throughout the establishment process to allow scalability and transferability across multiple contexts and settings (Campbell et al. 2000). Emerging evidence has identified that standardisation of complex health service interventions by its functions (principles or objectives) is superior to standardisation by its form (mode of delivery), without compromising fidelity, which is a paradigm shift that encourages prospective consideration of how implementation interventions can be adapted to improve intervention-context-fit, prior to being implemented at scale. Sustainable efforts are often those that are valued by clinicians, patients, and the health service overall with knowledge embedded in protocols and pathways that are co-designed by multidisciplinary teams and consumer engagement, aligned with legislative and guideline supported approaches. Building capability and motivation to provide opportunities to practice a new behaviour or skillset takes dedication and time before becoming habit and routine practice. The Care to Quit trial is novel in its early and continuous engagement with key stakeholders in the conceptualisation and development of the implementation strategy, which is envisaged to assist with continuous involvement and value-creation throughout the study.
4.1 Limitations
This study was designed at the time of the COVID-19 worldwide pandemic thus will require flexibility to allow implementation across a range of unforeseen circumstances. Nevertheless, the learnings of this study may guide future developments within and beyond the pandemic landscape and bring light to those that are new to the development of complex behavioural implementation trials.
5 Conclusions
This study illustrates the full process from the rigorous use of theories and frameworks to arriving at a practical intervention guide and set of intervention tools for an implementation trial. This work has potential to facilitate knowledge translation and contribute to more rigorously designed health system implementation trials, ultimately relevant to a variety of contextual elements with its flexible tailored implementation approach.
Availability of data and materials
The data generated or analysed during this study are included in this published article and its supplementary information files.
Abbreviations
- 3As model:
-
Ask, advise, assist
- APEASE:
-
Acceptability, practicability, effectiveness and cost-effectiveness, affordability, side-effects/safety, and equity
- BCT:
-
Behaviour change technique
- BCW:
-
Behaviour change wheel
- CINSW:
-
Cancer Institute New South Wales
- NSW:
-
New South Wales
- COM-B:
-
Capability, opportunity, motivation, behaviour
- COSA:
-
Clinical Oncology Society of Australia
- GP:
-
General practitioner
- HCP:
-
Healthcare professional
- NRT:
-
Nicotine Replacement Therapy
- RACGP:
-
Royal Australian College of General Practitioners
- TDF:
-
Theoretical domains framework
- VIC:
-
Victoria
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Open Access funding enabled and organized by CAUL and its Member Institutions. This study receives its in principal funding from the National Health and Medical Research Council (APP1169324). The funder had no role in study design or preparation of the manuscript.
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AR, ALY, and JT drafted the initial article. AR, ALY, JT, CLP, MM and KM made substantial contributions to the conceptual design and interpretation of the methodological approach underpinning the manuscript. CLP, JM, CS, FD, GB, LH, SA, SW, SV, MM, JT, and KM participated in the acquisition and design of the methodological strategy and elements. CLP, SV, FD, JM, SA, LB, CS and SW co-designed the study and the conception of the implementation intervention. All authors have read and approved the final manuscript and agree to be accountable for all aspects of the work.
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SV has received honoraria from Astra Zeneca for participation in educational events. FD have served on an advisory board for Amgen, and received clinical trial support from Bristol Myers Squibb and AstraZeneca. All other authors declare that they have no competing interests.
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This study was performed in line with the principles of the Declaration of Helsinki. Ethics approval was granted by the Hunter New England Human Research Ethics Committee (Reference Number: 2020/ETH02010)7 September 2020. Trial registration: ACTRN12621000154808, date of registration: 15 February 2021.
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Ryan, A., Young, A.L., Tait, J. et al. Building staff capability, opportunity, and motivation to provide smoking cessation to people with cancer in Australian cancer treatment centres: development of an implementation intervention framework for the Care to Quit cluster randomised controlled trial. Health Serv Outcomes Res Method 23, 280–312 (2023). https://doi.org/10.1007/s10742-022-00288-6
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DOI: https://doi.org/10.1007/s10742-022-00288-6