To compare changes in health-related quality of life (HRQoL) in young (18–25 years) versus older (≥ 26 years) adults up to 5 years after Roux-en-Y gastric bypass (RYGB).
Data on Short Form-36 (SF-36) and obesity-related problems scale (OP) at baseline and 1, 2, and 5 years after RYGB were extracted from the Scandinavian Obesity Surgery Registry. Within-group changes and the effect of age group on 5-year changes in SF-36 and OP were analyzed. Effects sizes (ESs) were calculated.
A total of 2542 young and 12,425 older adults were included at baseline, and 138 young (20.7% of those eligible) and 1021 older (31.8%) adults were followed-up 5 years post-RYGB. At this time, average to large improvements (ES ≥ 0.5) were observed in physical functioning, physical component score and OP in young adults, and in physical functioning, role physical, general health, physical component score, and OP in older adults (all, p ≤ 0.001). Both age groups displayed negligible to weak (ES < 0.5) or no improvements in mental HRQoL (all, p < 0.55). Older adults displayed greater 5-year improvements than their young counterparts in role physical, general health, vitality, social functioning, physical component score, and obesity-related problems scale (all, p < 0.05).
Both young and older adults displayed improvements in OP and physical HRQoL 5 years post-RYGB compared to baseline, while mental HRQoL did not improve to the same extent. Greater HRQoL-improvements could be expected in older patients why future research on HRQoL post-RYGB should stratify data on age groups.
Obesity (body mass index [BMI] ≥ 30 kg/m2) is associated with poor general and weight-related quality of life (HRQoL), most notably in pre-bariatric surgery populations as compared to non-bariatric surgery or non-treatment seekers [1,2,3,4], and HRQoL is increasingly acknowledged as an important outcome after bariatric surgery besides weight loss and remission of co-morbidities . While adults and adolescents display long-term improvements, particularly physical dimensions, of HRQoL after bariatric surgery, including control group comparisons with and without obesity [3, 5,6,7,8], less is known about post-surgical HRQoL in young adults (here defined as 18–25 years according to the Stockholm health care organization). Young adults are particularly vulnerable to both weight gain and mental health issues [9, 10]. More information regarding age-related changes in HRQoL are therefore warranted as suggested in a recent review by Kolotkin et al. .
Young adulthood is not characterized by a definite age range but by the transition from adolescence to mature adulthood, differentiated by identity building and becoming economically and socially independent . Young adults are vulnerable to weight gain due to factors such as exposures to junk food marketing, while also experiencing high attrition rates and poor weight loss outcomes once enrolled in standard obesity care programs [9, 12,13,14,15]. While obesity-related physical co-morbidities are still not common in this age group , psychological issues and poor HRQoL are frequently encountered in young adults compared to their adolescent and normal-weight counterparts [17, 18].
While poor HRQoL is a main incentive for seeking bariatric surgery among young adults [19,20,21], recent research reports that patients in this age group are continuously challenged with mental and emotional hardships after bariatric surgery [22, 23]. However, previous studies on HRQoL after RYGB did not report in detail on young adults’ scores . Given the specific traits of young adulthood, together with shifting HRQoL throughout the life course, generalizations from other age groups onto young adults may be misleading.
Therefore, the aim of this study was to compare within- and between-group changes in HRQoL in young (18–25 years) versus older (≥ 26 years) adults up to 5 years after Roux-en-Y gastric bypass (RYGB) by using data from the Scandinavian Obesity Surgery Registry (SOReg) [24, 25].
All data were retrieved from SOReg, a quality and research registry [24, 25]. SOReg is financed by the Swedish Association of Local Authorities and the National Board of Health and Welfare . Since the start in 2007, SOReg covers up to 97% of all bariatric procedures in Sweden, and 96.7–98.6% of data were correctly registered according to regular audits .
All patients aged 18–25 years (the definition of young adults in the Stockholm health care organization) who had undergone primary RYGB and were registered in SOReg were frequency matched for BMI, gender, and year of surgery to those aged ≥ 26 years. Patients without baseline HRQoL-data were thereafter excluded. Data extraction was performed on February 8, 2016 and the last data entry was made on September 15, 2015 (see flowchart, Fig. 1).
The primary aim was to compare 5-year changes in HRQoL after RYGB in young (18–25 years) versus older (≥ 26 years) adults as compared to baseline. The secondary aim was to compare within-group levels of HRQoL throughout the study period in young and older adults, respectively.
HRQoL was assessed by the global Short Form-36 version 1.0 (SF-36)  and the disease-specific obesity-related problems scale (OP) . SF-36 measures eight patient-reported domains of functional health during the last 4 weeks by 36 items. SF-36 was validated for the general Swedish population and was frequently used to study HRQoL post-RYGB [5, 27]. Scoring ranges from 0 to 100 points. A score of 100 indicates optimal HRQoL. The eight domains may be summarized into two summary scores; the physical and the mental component score (PCS and MCS, respectively). The summary scores are standardized to a mean of 50 indicating average health compared to the general population. Cronbach’s alpha for the present sample was 0.85–0.91, indicating good to excellent internal consistency.
OP was developed and validated in the Swedish Obese Subject and the Xendos studies to assess obesity-related psychosocial functioning in eight daily activities such as buying clothes and eating out . The summary score measures 0–100 points and is categorized into mild (< 40), moderate (40–59), and severe (≥ 60) impairment.
Covariates Used in the Regression Analysis
Co-morbidities were registered at baseline and defined as current pharmacological treatment for diabetes type 2, hypertension, dyslipidemia, depression, and/or usage of continuous positive airway pressure treatment for sleep apnea. Weight loss was defined as percentage total weight loss 5 years post-RYGB as compared to baseline (before any preoperative weight loss). Any RYGB-related adverse event reported at the 5-year follow-up was registered as an adverse event; see Hedenbro et al. for details . Surgical access was categorized into laparoscopic, open, or converted surgery.
Registry data were prospectively collected on physical appointments, by telephone or e-mail, and were collected at baseline and at 1, 2, and 5 years after RYGB .
For between-group comparisons of baseline characteristics and HRQoL-data, chi-square test, independent samples t test and Mann Whitney U test were used when appropriate. For within-group comparisons of HRQoL between time points, the paired samples sign test was used.
The effect of age group on HRQoL change (at 5 years post-RYGB compared to baseline) was analyzed in a uni- and multivariate regression analysis. Covariates with a p value < 0.10 in a full multivariate regression analysis were included in the final adjusted analyses (HRQoL at baseline, co-morbidities at baseline [yes/no], weight loss at 5 years, adverse events [yes/no], and surgical access [laparoscopic/open]). A sensitivity analysis was performed by imputing missing data with last observation- and baseline-carried forward data.
The clinical relevance of the differences/changes in HRQoL was measured by effect size, Cohen’s d (average scoregroup1 − average scoregroup2/pooled standard deviation) . Effect size was categorized into negligible (< 0.2), weak (0.2–0.5), average (0.5–0.8), and large changes (> 0.8).
For missing data analyses, differences between patients with versus without HRQoL-data at baseline, and differences between patients with versus without HRQoL-data at 5 years were analyzed by the chi-square test, independent samples t test and Mann Whitney U test when appropriate. All analyses were performed in SPSS version 22.0. A p value of < 0.05 was considered to be statistically significant.
A total of 2542 young (mean age 22.2 years, SD 2.2; mean-BMI 43.6, SD 5.4; 72.0% of original cohort) and 12,425 older (mean age 42.6 years, SD 9.6; mean-BMI 43.4, SD 5.0; 72.5% of original cohort) adults were included (Fig. 1). Patients with HRQoL data at baseline differed from those without in terms of fewer smokers (13.4 versus 15.0%), more depression (15.8 versus 14.5%) and more open procedures (3.9 vs 2.8%, all, p < 0.047).
Of eligible patients, 20.7% (n = 138) of the young and 31.8% (n = 1021) of the older adults were followed-up 5 years after RYGB (Fig. 1). Table 1 displays baseline characteristics in young and older adults respectively, grouped on all the patients who were included at baseline and on those with HRQoL data 5 years post-RYGB. Statistically significant differences in baseline characteristics between patients with versus those without missing data at the 5-year follow-up are reported in Table 1. Percentage weight loss at 5 years was 32.3% in young and 27.6% in older adults (p < 0.001).
Health-Related Quality of Life
Table 2 displays SF-36 and OP including effect sizes of differences between age groups, and Fig. 2 displays effect sizes in young and older adults respectively throughout the observation period. A total of 70.8% (n = 1793) of young and 63.5% (n = 7874) of the older adults were categorized as having severely impaired psychosocial functioning at baseline (p < 0.001). Young adults displayed average to large improvements (effect size ≥ 0.5) in physical functioning, PCS, and OP 5 years after RYGB. Likewise, older adults displayed average to large improvements in physical functioning, role physical, general health, PCS, and OP 5 years post-RYGB (all, p ≤ 0.001). For mental domains of SF-36, negligible, weak, or no 5-year changes were observed in both age categories (all, p < 0.55).
In an analysis of the effect of age group on 5-year changes in HRQoL, older adults displayed larger improvements in physical role, general health, vitality, social functioning, PCS, and OP than their younger counterparts (all, adjusted p ≤ 0.037, Table 3). The sensitivity analyses with imputed data did not materially alter these findings (data not shown).
By using data from SOReg, changes in HRQoL 5 years after RYGB in young (18–25 years) versus older (26–74 years) adults were compared. Average to large improvements in both groups concerning physical HRQoL and OP were found, while no (young adults) or negligible to weak change(s) (older adults) were observed in mental HRQoL. Young adults displayed smaller 5-year improvements in physical role, general health, vitality, social functioning, PCS, and OP than the older adults.
Previous studies displayed correlations between HRQoL after RYGB primarily with weight loss (positive) and co-morbidities (negative), yet only explaining a minor proportion of post-surgery improvements [30, 31]. Thus, age may be added to the list of predictors according to the present results. However, conversely to the present findings, King et al. reported on an inverse association between age and 3-year improvements in physical function and bodily pain (both, SF-36 components) after RYGB/gastric banding (adjusted relative risk of 1.05 for clinically meaningful improvement for each 10-year decrease, p ≤ 0.03) in 18–78-year-olds . Possibly, differences in baseline levels of physical health including for example history of orthopedic surgery between age groups/study may explain the diverging results, since poor function allows for a larger change. Moreover, Nun et al. found no association between age as a linear variable and changes in HRQoL post-bariatric surgery , which however may disguise HRQoL differences between age-strata.
Young adults’ comparatively small improvements in HRQoL post-RYGB in the present study may be secondary to life events. For example, young adults struggle with unemployment and housing shortages [33, 34], and the prevalence of mental illnesses peak during young adulthood , which together may deteriorate mental HRQoL during the follow-up period. Moreover, young adults hypothetically expect higher physical functions after RYGB than their older counterparts, as the younger likely compare themselves to normal-weight youths who generally did not yet develop for example musculoskeletal disorders/symptoms or reductions in sexual functions that may deteriorate HRQoL .
Although the present study was not designed to compare findings with norm data, the present results indicate that at 1 year after surgery, young and older RYGB patients approach Swedish norm levels of PCS (score 53.4, SD 7.1 versus 53.4, SD 6.8, in young adults and 50.7, SD 9.3, versus 51.2, SD 8.5, in older adults) and MCS (score 46.0, SD 12.1, versus 49.8, SD 9.5, in young adults and 49.0, SD 12.0, versus 50.2, SD 10.0, in older adults) . Importantly, particularly MCS deteriorate below norm levels at 2 and 5 years post-surgery in both age groups. Also, a comparison of the 5-year results with data on Swedish adolescents recently diagnosed with cancer (40.9, SD 14.0 in RYGB patients vs 52.8, SD 6.3 in cancer-patients) further illustrate the low self-reported mental HRQoL in young adult post-RYGB patients .
Previous high-quality long-term (≥ 5 years) follow-ups of physical HRQoL display clear and clinically meaningful peak improvements 1–2 years after bariatric surgery followed by a gradual decline that stabilized at 5 years, but typically somewhat below population norms . Moreover, the previously reported scores of PCS and OP in adults 5 years post-surgery were comparable to the present results . Meanwhile, previous research on long-term mental HRQoL is inconsistent, displaying both improvements and deteriorations up to 6 years after bariatric surgery . The conflicting results may be secondary to differences in baseline psychiatric co-morbidities between cohorts, which have rarely been accounted for. However, a meta-analysis comparing mental HRQoL data ≥ 5 years after bariatric surgery with non-surgical obese individuals found significant and clinically meaningful improvements in the surgical group, although not as large as for physical HRQoL, highlighting the need for comparison groups in HRQoL research .
Young adults with obesity have usually not yet developed obesity-related physical co-morbidities, but struggle with poor HRQoL, particularly mental domains . Such circumstances may interfere with life events that characterize emancipation in young adulthood including leaving the parental home, entering the work-force and starting higher education . From this perspective, the present poor improvements in mental HRQoL post-RYGB, together with previous correlations between young age and self-harm as well as externally caused death after bariatric surgery [23, 38], are disappointing. The poor outcomes in mental HRQoL might support the bidirectional theories of obesity—mental health issues , why RYGB may not necessarily improve underdiagnosed psychiatric diseases, which clearly should be treated primarily according to mental health guidelines. Instead, programs that focus on comorbid mental health issues including stigma, body image, and self-esteem which have shown promising results in non-bariatric surgical settings may be an adjunct in and should be evaluated also after weight loss surgery [40, 41].
The clear improvements in physical domains in young adults are promising and obviously promote increased physical activity, which is a predictor for weight loss after surgery [42, 43]. Improvements in physical role and OP indicate greater abilities to work and perform daily activities, thus facilitating general social participation and should have the potential to support young adults’ emancipation into independent adult life .
The main shortcomings in the current study include the large drop-out and secondary insufficient matching quality. However, there was no clinically relevant difference in matching variables between age groups after the exclusion of patients without HRQoL data at baseline, and the analysis of baseline and last observation carried forward data did not materially alter the findings, thus showing that the findings were robust. Since inclusion and follow-up rates were higher in the older versus the younger adults, statistical power was higher for the older group, and small clinical differences may thus become statistically significant for the older but not the younger adults. Therefore, results should be interpreted with effect sizes in mind.
The use of registry data limited what variables that could be adjusted for, and known correlates of HRQoL, such as physical activity levels, body image, loss of control of eating, and symptoms of dumping syndrome, were not included [4, 43,44,45]. Also, the matching design did not allow for an analysis by gender . Nor was there any information on whether some patients were subjects to interventions aiming at improved HRQoL during the follow-up, which then might have distorted the results. Moreover, age-dependent differences in impression management pre-operatively may have skewed the results and could not be accounted for .
Strengths included the use of a high-quality bariatric surgery registry, the use of validated global as well as obesity-specific questionnaires, long-term follow-up of real-life data and inclusion of the difficult-to-reach patient group of young adults, who were reported to display high drop-out rates in previous trials [3, 14].
Both young (18–25 years) and older (26–74 years) adults displayed improvements in physical domains of HRQoL 5 years after RYGB, although greater improvements were observed in the older adults, while both age groups displayed poor improvements in mental domains. Future studies of HRQoL after bariatric surgery should stratify data on age in order not to falsely generalize adult results on younger patients. Interventions aiming at improving mental HRQoL in particularly young adult post-RYGB patients are urgently needed.
van Nunen AM, Wouters EJ, Vingerhoets AJ, et al. The health-related quality of life of obese persons seeking or not seeking surgical or non-surgical treatment: a meta-analysis. Obes Surg. 2007;17(10):1357–66.
White MA, O'Neil PM, Kolotkin RL, et al. Gender, race, and obesity-related quality of life at extreme levels of obesity. Obes Res. 2004;12(6):949–55. https://doi.org/10.1038/oby.2004.116.
Kolotkin RL, Andersen JR. A systematic review of reviews: exploring the relationship between obesity, weight loss and health-related quality of life. Clin Obes. 2017;7(5):273–89. https://doi.org/10.1111/cob.12203.
Sarwer DB, Lavery M, Spitzer JC. A review of the relationships between extreme obesity, quality of life, and sexual function. Obes Surg. 2012;22(4):668–76. https://doi.org/10.1007/s11695-012-0588-1.
Raaijmakers LC, Pouwels S, Thomassen SE, et al. Quality of life and bariatric surgery: a systematic review of short- and long-term results and comparison with community norms. Eur J Clin Nutr. 2017;71(4):441–9. https://doi.org/10.1038/ejcn.2016.198.
Olbers T, Beamish AJ, Gronowitz E, et al. Laparoscopic Roux-en-Y gastric bypass in adolescents with severe obesity (AMOS): a prospective, 5-year, Swedish nationwide study. Lancet Diabetes Endocrinol. 2017;5(3):174–83. https://doi.org/10.1016/S2213-8587(16)30424-7.
Andersen JR, Aasprang A, Karlsen TI, et al. Health-related quality of life after bariatric surgery: a systematic review of prospective long-term studies. Surg Obes Relat Dis. 2015;11(2):466–73. https://doi.org/10.1016/j.soard.2014.10.027.
Kolotkin RL, Kim J, Davidson LE, et al. 12-year trajectory of health-related quality of life in gastric bypass patients versus comparison groups. Surg Obes Relat Dis. 2018;14:1359–65. https://doi.org/10.1016/j.soard.2018.04.019.
Ng M, Fleming T, Robinson M, et al. Global, regional, and national prevalence of overweight and obesity in children and adults during 1980-2013: a systematic analysis for the global burden of disease study 2013. Lancet. 2014;384(9945):766–81. https://doi.org/10.1016/S0140-6736(14)60460-8.
Kessler RC, Angermeyer M, Anthony JC, et al. Lifetime prevalence and age-of-onset distributions of mental disorders in the World Health Organization’s World Mental Health Survey Initiative. World Psychiatry. 2007;6(3):168–76.
Arnett JJ. Emerging adulthood. A theory of development from the late teens through the twenties. Am Psychol. 2000;55(5):469–80.
Poobalan AS, Aucott LS, Precious E, et al. Weight loss interventions in young people (18 to 25 year olds): a systematic review. Obes Rev. 2010;11(8):580–92. https://doi.org/10.1111/j.1467-789X.2009.00673.x.
Shantavasinkul PC, Omotosho P, Corsino L, et al. Predictors of weight regain in patients who underwent Roux-en-Y gastric bypass surgery. Surg Obes Relat Dis. 2016;12(9):1640–5. https://doi.org/10.1016/j.soard.2016.08.028.
Lanoye A, Brown KL, LaRose JG. The transition into young adulthood: a critical period for weight control. Curr Diab Rep. 2017;17(11):114. https://doi.org/10.1007/s11892-017-0938-4.
Loria CM, Signore C, Arteaga SS. The need for targeted weight-control approaches in young women and men. Am J Prev Med. 2010;38(2):233–5. https://doi.org/10.1016/j.amepre.2009.11.001.
Dreber H, Reynisdottir S, Angelin B, et al. Who is the treatment-seeking young adult with severe obesity: a comprehensive characterization with emphasis on mental health. PLoS One. 2015;10(12):e0145273. https://doi.org/10.1371/journal.pone.0145273.
Dixon JB, Rice TL, Lambert EA, et al. Obese adolescents report better health-related quality of life than obese young adults. Obes Surg. 2015;25(11):2135–42. https://doi.org/10.1007/s11695-015-1677-8.
Dreber H, Reynisdottir S, Angelin B, et al. Mental distress in treatment seeking young adults (18-25 years) with severe obesity compared with population controls of different body mass index levels: cohort study. Clin Obes. 2017;7(1):1–10. https://doi.org/10.1111/cob.12170.
Peacock JC, Perry L, Morien K. Bariatric patients’ reported motivations for surgery and their relationship to weight status and health. Surg Obes Relat Dis. 2017;14:39–45. https://doi.org/10.1016/j.soard.2017.10.005.
LaRose JG, Leahey Tm Fau-Hill JO, Hill Jo Fau-Wing RR, Wing RR. Differences in motivations and weight loss behaviors in young adults and older adults in the National Weight Control Registry. (1930-739X (Electronic)). https://doi.org/10.1002/oby.20053.
Munoz DJ, Lal M, Chen EY, et al. Why patients seek bariatric surgery: a qualitative and quantitative analysis of patient motivation. Obes Surg. 2007;17(11):1487–91.
Zeller MH, Pendery EC, Reiter-Purtill J, et al. From adolescence to young adulthood: trajectories of psychosocial health following Roux-en-Y gastric bypass. Surg Obes Relat Dis. 2017;13(7):1196–203. https://doi.org/10.1016/j.soard.2017.03.008.
Lagerros YT, Brandt L, Hedberg J, et al. Suicide, self-harm, and depression after gastric bypass surgery: a nationwide cohort study. Ann Surg. 2017;265(2):235–43. https://doi.org/10.1097/SLA.0000000000001884.
Scandinavian Obesity Registry Surgery. Annual reports. 2010-2012.
Hedenbro JL, Naslund E, Boman L, et al. Formation of the Scandinavian obesity surgery registry, SOReg. Obes Surg. 2015;25(10):1893–900. https://doi.org/10.1007/s11695-015-1619-5.
Tao W, Holmberg D, Naslund E, et al. Validation of obesity surgery data in the Swedish National Patient Registry and Scandinavian obesity registry (SOReg). Obes Surg. 2016;26(8):1750–6. https://doi.org/10.1007/s11695-015-1994-y.
Sullivan M, Karlsson J, Ware Jr JE. The Swedish SF-36 Health Survey--I. Evaluation of data quality, scaling assumptions, reliability and construct validity across general populations in Sweden. Soc Sci Med (1982). 1995;41(10):1349–58.
Karlsson J, Taft C, Sjostrom L, et al. Psychosocial functioning in the obese before and after weight reduction: construct validity and responsiveness of the obesity-related problems scale. Int J Obes Relat Metab Disord. 2003;27(5):617–30. https://doi.org/10.1038/sj.ijo.0802272.
Fayers PM, Machin D. Quality of life. West Sussex: Wiley; 2000.
Kolotkin RL, Davidson LE, Crosby RD, et al. Six-year changes in health-related quality of life in gastric bypass patients versus obese comparison groups. Surg Obes Relat Dis. 2012;8(5):625–33. https://doi.org/10.1016/j.soard.2012.01.011.
Torquati A, Lutfi RE, Richards WO. Predictors of early quality-of-life improvement after laparoscopic gastric bypass surgery. Am J Surg. 2007;193(4):471–5. https://doi.org/10.1016/j.amjsurg.2006.08.065.
King WC, Chen JY, Belle SH, et al. Change in pain and physical function following bariatric surgery for severe obesity. Jama. 2016;315(13):1362–71. https://doi.org/10.1001/jama.2016.3010.
Unga vuxna börjar arbeta senare idag än för 30 år sedan: Statistics Sweden; [2018-08-18]. Available from: : https://www.scb.se/sv_/Hitta-statistik/Artiklar/Unga-vuxna-borjar-arbeta-senare-idag-an-for-30-ar-sedan/#. Accessed 18 Aug 2018.
Estimated average age of young people leaving the parental household by sex [yth_demo_030]: Eurostat. Available from: http://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=yth_demo_030&lang=en. Accessed 21 Aug 2018.
Sullivan MKJ, Taft C. SF-36 Hälsoenkät: Svensk Manual och Tolkningsguide, 2:a upplagan Swedish Manual and Interpretation Guide. 2nd ed. Gothenburg: Göteborgs Universitet; 2002.
Ander M, Gronqvist H, Cernvall M, et al. Development of health-related quality of life and symptoms of anxiety and depression among persons diagnosed with cancer during adolescence: a 10-year follow-up study. Psychooncology. 2016;25(5):582–9. https://doi.org/10.1002/pon.3965.
Driscoll S, Gregory DM, Fardy JM, et al. Long-term health-related quality of life in bariatric surgery patients: a systematic review and meta-analysis. Obesity (Silver Spring, Md). 2016;24(1):60–70. https://doi.org/10.1002/oby.21322.
Davidson LE, Adams TD, Kim J, et al. Association of patient age at gastric bypass surgery with long-term all-cause and cause-specific mortality. JAMA Surg. 2016;151(7):631–7. https://doi.org/10.1001/jamasurg.2015.5501.
Marmorstein NR, Iacono WG, Legrand L. Obesity and depression in adolescence and beyond: reciprocal risks. Int J Obes (2005). 2014;38(7):906–11. https://doi.org/10.1038/ijo.2014.19.
Lillis J, Hayes SC, Bunting K, et al. Teaching acceptance and mindfulness to improve the lives of the obese: a preliminary test of a theoretical model. Ann Behav Med. 2009;37(1):58–69. https://doi.org/10.1007/s12160-009-9083-x.
Olson KL, Thaxton TT, Emery CF. Targeting body dissatisfaction among women with overweight or obesity: a proof-of-concept pilot study. Int J Eat Disord. 2018; https://doi.org/10.1002/eat.22874.
Sheets CS, Peat CM, Berg KC, et al. Post-operative psychosocial predictors of outcome in bariatric surgery. Obes Surg. 2015;25(2):330–45. https://doi.org/10.1007/s11695-014-1490-9.
Forbush SW, Nof L, Echternach J, et al. Influence of activity on quality of life scores after RYGBP. Obes Surg. 2011;21(8):1296–304. https://doi.org/10.1007/s11695-010-0184-1.
White MA, Kalarchian MA, Masheb RM, et al. Loss of control over eating predicts outcomes in bariatric surgery patients: a prospective, 24-month follow-up study. J Clin Psychiatry. 2010;71(2):175–84. https://doi.org/10.4088/JCP.08m04328blu.
Emous M, Wolffenbuttel BHR, Totte E, et al. The short- to mid-term symptom prevalence of dumping syndrome after primary gastric-bypass surgery and its impact on health-related quality of life. Surg Obes Relat Dis. 2017;13(9):1489–500. https://doi.org/10.1016/j.soard.2017.04.028.
Ratcliff MB, Reiter-Purtill J, Inge TH, et al. Changes in depressive symptoms among adolescent bariatric candidates from preoperative psychological evaluation to immediately before surgery. Surg Obes Relat Dis. 2011;7(1):50–4. https://doi.org/10.1016/j.soard.2010.05.016.
Many thanks to the SOReg steering committee for sharing their data and to The Erling-Persson Family Foundation.
The study was partly funded by Stockholm County Council and the Erling-Persson Family Foundation (Anders Thorell). The providers of the funding source were not involved in the design or conduct of the study; management, analysis, and interpretation of the data or the preparation; and review or approval of the manuscript.
The study was approved by the Stockholm Regional Ethical Review Board (2012/1217-31/5 and 2017/1887-32).
Conflict of Interest
The authors declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
About this article
Cite this article
Dreber, H., Thorell, A., Reynisdottir, S. et al. Health-Related Quality of Life 5 Years After Roux-en-Y Gastric Bypass in Young (18–25 Years) Versus Older (≥ 26 Years) Adults: a Scandinavian Obesity Surgery Registry Study. OBES SURG 29, 434–443 (2019). https://doi.org/10.1007/s11695-018-3559-3
- Young adult