scholarly journals Text messaging and financial incentives to encourage weight loss in men with obesity: the Game of Stones feasibility RCT

2020 ◽  
Vol 8 (11) ◽  
pp. 1-224
Author(s):  
Stephan U Dombrowski ◽  
Matthew McDonald ◽  
Marjon van der Pol ◽  
Mark Grindle ◽  
Alison Avenell ◽  
...  

Background In 2016, 26% of UK men were estimated to be obese. Systematic reviews suggest that few men engage in formal weight loss interventions that support weight reduction and improve health. Objective To co-produce, with patient and public involvement, an acceptable and feasible randomised controlled trial design to test a men-only weight management intervention. Design This was a two-phase feasibility study. Phase 1 was the development of intervention components, study procedures and materials including a discrete choice experiment with survey questions. Phase 2 was an individually randomised three-arm feasibility trial over 12 months. Qualitative interviews were conducted at 3 and 12 months. Setting The setting was two sites in Scotland that had disadvantaged urban and rural areas and differed in employment levels and ethnic groups. Participants In phase 1, 1045 men with obesity were recruited by Ipsos MORI (London, UK; www.ipsos.com/ipsos-mori/en-uk) to represent the UK population. In phase 2, 105 men with obesity were recruited in the community or through general practice obesity registers. Qualitative interviews were conducted with 50 men at 3 months and with 33 men at 12 months. Interventions The trial arms were narrative short message service (SMS) for 12 months (SMS only), financial endowment incentive informed by loss aversion and linked to achievement of weight loss targets plus narrative SMS for 12 months (SMS + I), and waiting list control group for 12 months followed by 3 months of an alternative SMS style developed based on feedback from men who had received the narrative SMS (control). Main outcome measures The main outcome measures were acceptability and feasibility of recruitment, retention, engagement, intervention components and trial procedures. Outcomes were assessed by examining procedural, quantitative and qualitative data at 3, 6 and 12 months. Results The most acceptable incentive strategy, based on the discrete choice experiment results, was to verify weight loss of 5% at 3 months, verify weight loss of 10% at 6 months and maintain weight loss of 10% at 12 months. Overall, 105 men with obesity from across the socioeconomic spectrum were successfully recruited to target, 59% of whom lived in more disadvantaged areas. Retention at 12 months was acceptable (74%) and was higher among individuals from disadvantaged areas. Narrative SMS were acceptable to many men, with a minority reporting negative reactions. Incentives were acceptable but were not the primary motivation for behaviour change. Twelve men in the incentive arm (33%) secured at least some money and three (8%) secured the full amount. Both intervention arms lost some weight, with greater weight loss in the arm that received SMS and incentives. The alternative SMS based on men’s feedback received no strong negative reactions. Limitations Fewer participants from the SMS + I arm (64%) completed the study at 12 months than did those in the SMS-only (79%) and control (83%) arms. The reasons for this difference were complex. Conclusions The men-only weight management intervention consisting of narrative SMS and financial incentives was acceptable and feasible, meeting the progression criteria for a full trial. Tailoring of SMS may improve acceptability and retention. Future work Minor refinements to the intervention components based on the study findings will be made prior to testing in a multisite definitive randomised controlled trial. Trial registration ClinicalTrials.gov NCT03040518. Funding This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 8, No. 11. See the NIHR Journals Library website for further project information.

2015 ◽  
Vol 3 (2) ◽  
pp. 1-130 ◽  
Author(s):  
Sally Wyke ◽  
Kate Hunt ◽  
Cindy M Gray ◽  
Elisabeth Fenwick ◽  
Christopher Bunn ◽  
...  

BackgroundThe prevalence of male obesity is increasing alongside low uptake of existing weight management programmes by men. Football Fans in Training (FFIT) is a group-based, weight management and healthy living programme delivered by community coaches.ObjectivesTo assess (1) the effectiveness and cost-effectiveness of FFIT, (2) fidelity of delivery and (3) coach and participant experiences of FFIT.DesignA two-arm, pragmatic, randomised controlled trial; associated cost-effectiveness [in terms of incremental cost per quality-adjusted life-year (QALY) within trial and over individuals’ lifetimes]; and process evaluation. Participants were block randomised in a 1 : 1 ratio, stratified by club; the intervention group started FFIT within 3 weeks and the comparison group were put on a 12-month waiting list.SettingThirteen professional football clubs in Scotland, UK.ParticipantsA total of 747 men aged 35–65 years with an objectively measured body mass index (BMI) of ≥ 28 kg/m2.InterventionsFFIT was gender sensitised in context, content and style of delivery. A total of 12 weekly sessions delivered at club stadia combined effective behaviour change techniques with dietary information and physical activity sessions. Men carried out a pedometer-based walking programme. A light-touch maintenance programme included six e-mails and a reunion session at 9 months. At baseline, both groups received a weight management booklet, feedback on their BMI and advice to consult their general practitioner if blood pressure was high.Primary outcomeMean difference in weight loss between groups at 12 months expressed as absolute weight and a percentage. Intention-to-treat analyses used all available data.Data sourcesObjective measurements, questionnaires, observations, focus groups and coach interviews.ResultsA total of 374 men were allocated to the intervention and 333 (89%) completed 12-month assessments; a total of 374 were allocated to the comparator and 355 (95%) completed 12-month assessments. At 12 months, the mean difference in weight loss between groups, adjusted for baseline weight and club, was 4.94 kg [95% confidence interval (CI) 3.95 kg to 5.94 kg]; percentage weight loss, similarly adjusted, was 4.36% (95% CI 3.64% to 5.08%), in favour of the intervention (p < 0.0001). Sensitivity analyses gave similar results. Pre-specified subgroup analyses found no significant predictors of primary outcome. Highly significant differences in favour of the intervention were observed for objectively measured waist, percentage body fat, systolic and diastolic blood pressure, and self-reported physical activity, diet and indicators of well-being and physical aspects of quality of life. Eight serious adverse events were reported, of which two were reported as related to FFIT participation. From the within-trial analysis, FFIT was estimated to cost £862 per additional man maintaining a 5% weight reduction at 12 months and £13,847 per additional QALY, both compared with no intervention. For a cost-effectiveness threshold of £20,000/QALY, the probability that FFIT is cost-effective, compared with no active intervention, is 0.72. This probability rises to 0.89 for a cost-effectiveness threshold of £30,000/QALY. From the longer-term analysis, FFIT was estimated to cost £2535 per life-year gained and £2810 per QALY gained. FFIT was largely delivered as intended. The process evaluation demonstrated the powerful draw of football to attract men at high risk of ill health. FFIT was popular and analyses suggest that it enabled lifestyle change in ways that were congruent with participants’ identities.ConclusionsParticipation in FFIT led to significant reductions in weight at 12 months. It was cost-effective at standard levels employed in the UK, attracted men at high risk of future ill health and was enjoyable. Further research should investigate whether or not participants retained weight loss in the long term, how the programme could be optimised in relation to effectiveness and intensity of delivery and how group-based programmes may operate to enhance weight loss in comparison with individualised approaches.Study registrationCurrent Controlled Trials ISRCTN32677491.FundingScottish Government and The Football Pools funded the delivery of FFIT. National Institute for Health Research Public Health Research programme funded the evaluation and will be published in full inPublic Health Research; Vol. 3, No. 2. See the NIHR Journals Library website for further project information.


2020 ◽  
Author(s):  
Vasiliki Kolovou ◽  
Yvonne Moriarty ◽  
Stephanie Gilbert ◽  
Harriet Quinn-Scoggins ◽  
Julia Townson ◽  
...  

Abstract Background Recruitment of research participants poses challenges in socioeconomically deprived areas. The Awareness and Beliefs About Cancer (ABACus) phase 3 Randomised Control Trial recruited adult participants from socioeconomically deprived areas using a combined healthcare/community engagement model. We report the strategies used to successfully recruit and retain our trial participant sample. Methods Community and healthcare settings in areas of high socioeconomic deprivation were identified by lay advisors who recruited participants opportunistically or by appointment. Follow-up was done by telephone or post at 2-weeks and 6-months after recruitment, and all participants were offered financial incentives. Qualitative interviews were conducted with lay advisors regarding their experience and reflections. Results The lay advisors identified and contacted 107 potential recruitment venues across South and West Yorkshire and South East Wales of which 41.1% (n = 42) were opened for recruitment. A total of 234 participants were recruited, with 91% (n = 212) retention at 2-weeks and 85% (n = 199) at 6-months. Community settings yielded 75% (n = 176) of participants. Participants had a mean age of 61.3 years and 63.3% (n = 148) were female, with 66% (n = 154) resident in the most deprived geographical areas. Lay advisors described recruitment as intensive, although engaging participants was easier in community settings. Conclusions The ABACus3 trial achieved recruitment and high retention with a population that is often “hard to reach” or entirely missed in health research. Strategies were specifically tailored to engage the venues and adult residents of highly deprived areas. Future studies recruiting adults living in the most deprived areas might benefit from community recruitment and from collaborating with local gatekeepers who are key to engagement.


2020 ◽  
Vol 8 (7) ◽  
pp. 1-156
Author(s):  
Joanne L Clarke ◽  
Jenny Ingram ◽  
Debbie Johnson ◽  
Gill Thomson ◽  
Heather Trickey ◽  
...  

Background The UK has low levels of breastfeeding initiation and continuation, with evident socioeconomic disparities. To be inclusive, peer-support interventions should be woman-centred rather than breastfeeding-centred. Assets-based approaches to public health focus on the positive capabilities of individuals and communities, rather than their deficits and problems. The Assets-based feeding help Before and After birth (ABA) intervention offers an assets-based approach based on behaviour change theory. Objective To investigate the feasibility of delivering the ABA infant feeding intervention in a randomised controlled trial. Design This was an individually randomised controlled feasibility trial; women were randomised in a 1 : 1 ratio to either the intervention group or the comparator (usual care) group. Setting Two separate English sites were selected because they had an existing breastfeeding peer support service, relatively high levels of socioeconomic disadvantage and low rates of breastfeeding. Participants Women aged ≥ 16 years who were pregnant with their first child, irrespective of feeding intention (n = 103), were recruited by researchers in antenatal clinics. Interventions Proactive, woman-centred support, using an assets-based approach and including behaviour change techniques, was provided by an infant-feeding helper (a breastfeeding peer supporter trained in the ABA intervention) and delivered through face-to-face contact, telephone conversations and text messages. The intervention commenced at around 30 weeks’ gestation and could continue until 5 months postnatally. Main outcome measures The main outcome measures were feasibility of intervention delivery with the requisite intensity and duration; acceptability to women, infant-feeding helpers and maternity services; and feasibility of a future randomised controlled trial. Outcomes included recruitment rates and follow-up rates at 3 days, 8 weeks and 6 months postnatally, and outcomes for a future full trial were collected via participant questionnaires. A mixed-methods process evaluation included qualitative interviews with women, infant-feeding helpers and maternity services; infant-feeding helper logs; and audio-recordings of antenatal contacts to check intervention fidelity. Results Of the 135 eligible women approached, 103 (76.3%) agreed to participate. The study was successful in recruiting teenagers (8.7%) and women living in areas of socioeconomic disadvantage (37.3% resided in the most deprived 40% of small areas in England). Postnatal follow-up rates were 68.0%, 85.4% and 80.6% at 3 days, 8 weeks and 6 months, respectively. Feeding status at 8 weeks was obtained for 95.1% of participants. Recruitment took place from February 2017 until August 2017. It was possible to recruit and train existing peer supporters to the infant-feeding helper role. The intervention was delivered to most women with relatively high fidelity. Among the 50 women in the intervention group, 39 received antenatal visits and 40 received postnatal support. Qualitative data showed that the intervention was acceptable. There was no evidence of intervention-related harms. Limitations Birth notification delays resulted in delays in the collection of postnatal feeding status data and in the offer of postnatal support. In addition, the intervention needs to better consider all infant-feeding types and did not adequately accommodate women who delivered prematurely. Conclusion It is feasible to deliver the intervention and trial. Future work The intervention should be tested in a fully powered randomised controlled trial. Trial registration Current Controlled Trials ISRCTN14760978. Funding This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 8, No. 7. See the NIHR Journals Library website for further project information.


2020 ◽  
Author(s):  
Vasiliki Kolovou ◽  
Yvonne Moriarty ◽  
Stephanie Gilbert ◽  
Harriet Quinn-Scoggins ◽  
Julia Townson ◽  
...  

Abstract Background: Recruitment of research participants poses challenges in socioeconomically deprived areas. The Awareness and Beliefs About Cancer (ABACus) phase 3 Randomised Control Trial recruited adult participants from socioeconomically deprived areas using a combined healthcare/community engagement model. We report the strategies used to successfully recruit and retain our trial participant sample.Methods: Community and healthcare settings in areas of high socioeconomic deprivation were identified by lay advisors who recruited participants opportunistically or by appointment. Follow-up was done by telephone or post at 2-weeks and 6-months after recruitment, and all participants were offered financial incentives. Qualitative interviews were conducted with lay advisors regarding their experience and reflections.Results: The lay advisors identified and contacted 107 potential recruitment venues across South and West Yorkshire and South East Wales of which 41.1% (n= 42) were opened for recruitment. A total of 234 participants were recruited, with 91% (n= 212) retention at 2-weeks and 85% (n= 199) at 6-months. Community settings yielded 75% (n= 176) of participants. Participants had a mean age of 61.3 years and 63.3% (n= 148) were female, with 66% (n= 154) resident in the most deprived geographical areas. Lay advisors described recruitment as intensive, although engaging participants was easier in community settings.Conclusions: The ABACus3 trial achieved recruitment and high retention with a population that is often “hard to reach” or entirely missed in health research. Strategies were specifically tailored to engage the venues and adult residents of highly deprived areas. Future studies recruiting adults living in the most deprived areas might benefit from community recruitment and from collaborating with local gatekeepers who are key to engagement.This study adheres to CONSORT guidelines.Trial Registration: Retrospectively registered with ISRCTN (http://www.isrctn.com/ISRCTN16872545) on 12.01.2018.


2020 ◽  
Vol 8 (8) ◽  
pp. 1-126
Author(s):  
Stacy A Clemes ◽  
Daniel D Bingham ◽  
Natalie Pearson ◽  
Yu-Ling Chen ◽  
Charlotte Edwardson ◽  
...  

Background Sedentary behaviour (sitting) is a highly prevalent negative health behaviour, with individuals of all ages exposed to environments that promote prolonged sitting. The school classroom represents an ideal setting for environmental change through the provision of sit–stand desks. Objectives The aim of this study was to undertake a pilot cluster randomised controlled trial of the introduction of sit–stand desks in primary school classrooms, to inform a definitive trial. Objectives included providing information on school and participant recruitment and retention, acceptability of the intervention, and outcome measures. A preliminary estimate of the intervention’s effectiveness on the proposed primary outcome (change in weekday sitting time) for inclusion in a definitive trial was calculated, along with a preliminary assessment of potential cost-effectiveness. A full process evaluation was also undertaken. Design A two-armed pilot cluster randomised controlled trial with economic and qualitative evaluations. Schools were randomised on a 1 : 1 basis to the intervention (n = 4) or control (n = 4) trial arms. Setting Primary schools in Bradford, West Yorkshire, UK. Participants Children in Year 5 (i.e. aged 9–10 years). Intervention Six sit–stand desks replaced three standard desks (sitting six children) in the intervention classrooms for 4.5 months. Teachers were encouraged to ensure that all pupils were exposed to the sit–stand desks for at least 1 hour per day, on average, using a rotation system. Schools assigned to the control arm continued with their usual practice. Main outcome measures Trial feasibility outcomes included school and participant recruitment and attrition, acceptability of the intervention, and acceptability of and compliance with the proposed outcome measures [including weekday sitting measured using activPAL™ (PAL Technologies Ltd, Glasgow, UK) accelerometers, physical activity, adiposity, blood pressure, cognitive function, musculoskeletal comfort, academic progress, engagement and behaviour]. Results Thirty-three per cent of schools approached and 75% (n = 176) of eligible children took part. At the 7-month follow-up, retention rates were 100% for schools and 97% for children. Outcome measure completion rates ranged from 63% to 97%. A preliminary estimate of intervention effectiveness, from a weighted linear regression model (adjusting for baseline sitting time and wear time) revealed a mean difference in change in sitting of –30.6 minutes per day (95% confidence interval –56.42 to –4.84 minutes per day) between the intervention and control trial arms. The process evaluation revealed that the intervention, recruitment and evaluation procedures were acceptable to teachers and children, with the exception of minor issues around activPAL attachment. A preliminary within-trial economic analysis revealed no difference between intervention and control trial arms in health and education resource use or outcomes. Long-term modelling estimated an unadjusted incremental cost-effectiveness ratio of Stand Out in Class of £78,986 per quality-adjusted life-year gained. Conclusion This study has provided evidence of the acceptability and feasibility of the Stand Out in Class intervention and evaluation methods. Preliminary evidence suggests that the intervention may have a positive direction of effect on weekday sitting time, which warrants testing in a full cluster randomised controlled trial. Lessons learnt from this trial will inform the planning of a definitive trial. Trial registration Current Controlled Trials ISRCTN12915848. Funding This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 8, No. 8. See the NIHR Journals Library website for further project information.


BMJ Open ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. e017159 ◽  
Author(s):  
Lynsay Matthews ◽  
Juliana Pugmire ◽  
Laurence Moore ◽  
Mark Kelson ◽  
Alex McConnachie ◽  
...  

IntroductionHelpMeDoIt! will test the feasibility of an innovative weight loss intervention using a smartphone app and website. Goal setting, self-monitoring and social support are three key facilitators of behaviour change. HelpMeDoIt! incorporates these features and encourages participants to invite ‘helpers’ from their social circle to help them achieve their goal(s).AimTo test the feasibility of the intervention in supporting adults with obesity to achieve weight loss goals.Methods and analysis12-month feasibility randomised controlled trial and accompanying process evaluation. Participants (n=120) will be adults interested in losing weight, body mass index (BMI)>30 kg/m2and smartphone users. The intervention group will use the app/website for 12 months. Participants will nominate one or more helpers to support them. Helpers have access to the app/website. The control group will receive a leaflet on healthy lifestyle and will have access to HelpMeDoIt! after follow-up. The key outcome of the study is whether prespecified progression criteria have been met in order to progress to a larger randomised controlled effectiveness trial. Data will be collected at baseline, 6 and 12 months. Outcomes focus on exploring the feasibility of delivering the intervention and include: (i) assessing three primary outcomes (BMI, physical activity and diet); (ii) secondary outcomes of waist/hip circumference, health-related quality of life, social support, self-efficacy, motivation and mental health; (iii) recruitment and retention; (iv) National Health Service (NHS) resource use and participant borne costs; (v) usability and acceptability of the app/website; and (vi) qualitative interviews with up to 50 participants and 20 helpers on their experiences of the intervention. Statistical analyses will focus on feasibility outcomes and provide initial estimates of intervention effects. Thematic analysis of qualitative interviews will assess implementation, acceptability, mechanisms of effect and contextual factors influencing the intervention.Ethics and disseminationThe protocol has been approved by the West of Scotland NHS Research Ethics Committee (Ref: 15/WS/0288) and the University of Glasgow MVLS College Ethics Committee (Ref: 200140108). Findings will be disseminated widely through peer-reviewed publication and conference presentations.Trial registration numberISRCTN85615983.


2019 ◽  
Vol 7 (16) ◽  
pp. 1-178
Author(s):  
Simon J Sebire ◽  
Kathryn Banfield ◽  
Rona Campbell ◽  
Mark J Edwards ◽  
Ruth Kipping ◽  
...  

Background Girls are less active than boys and few adolescent girls meet physical activity (PA) guidelines. Peers are an important influence on the views and behaviours of adolescent girls, yet many PA interventions involving peers use formal approaches that may not harness the power of peer groups. More informal peer-led PA interventions, which work within proximal peer groups, may hold promise for increasing girls’ PA. Objectives To examine the feasibility, evidence of promise and cost of the Peer-Led physical Activity iNtervention for Adolescent girls (PLAN-A), a peer-led PA intervention. Design Phase 1 comprised formative work and a pilot study conducted in one secondary school. Phase 2 was a feasibility study comprising a pilot randomised controlled trial in six secondary schools, including process and economic evaluations. Setting Six secondary schools in South Gloucestershire and Wiltshire, recruited from schools above the median local Pupil Premium (i.e. more deprived). Participants Year 8 girls (aged 12–13 years). Intervention Year 8 girls nominated other girls in their year who are likely to be influential (e.g. who they look up to, are good listeners); the 18% most nominated were invited to be peer supporters (PSs). PSs attended 2 consecutive days of training (plus a top-up day 5 weeks later) outside the school site, led by pairs of PS trainers, to increase their knowledge about PA and their capabilities and confidence to promote PA in their friendship group. Main outcome measures Measures focused on establishing evidence for feasibility and promise: recruitment and retention of Year 8 girls and PSs, data provision rates [accelerometer and questionnaire collected pre randomisation/beginning of Year 8 (T0), end of Year 8 (T1) and beginning of Year 9 (T2)], intervention acceptability, PS training attendance, intervention cost, and the between-arm difference in weekday minutes of moderate to vigorous PA (MVPA). A process evaluation was conducted. Results Six schools were recruited: four PLAN-A (n = 269) and two control (n = 158). In total, 94.7% of Year 8 girls participated. A total of 55 (17–24% of Year 8 girls) PSs were trained (attendance rate 91–100%). Five girls were trained as PS trainers. Questionnaire data provision exceeded 92% at all time points. Accelerometer return rates were > 85% and wear-time criteria were met by 83%, 71% and 62% of participants at T0, T1 and T2, respectively. Mean weekday MVPA did not differ between intervention arms at T1 (1.1 minutes, 95% CI –4.3 to 6.5 minutes) but did at T2 (6.1 minutes, 95% CI 1.4 to 10.8 minutes), favouring PLAN-A. The mean cost of intervention delivery was £2685 per school or £37 per Year 8 girl. Process evaluation identified good fidelity, engagement and enjoyment of the PS training and peer-support strategies. PSs needed more guidance on how to start conversations. Limitations Accelerometer data provision was lowest at T2, suggesting a need for strategies to increase compliance. Conclusions Informal peer-led intervention approaches, such as PLAN-A, hold promise as a means of promoting PA to adolescent girls. Future work A definitive randomised controlled trial of PLAN-A is warranted. Trial registration Current Controlled Trials ISRCTN12543546. Funding This project was funded by the National Institute for Health Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 7, No. 16. See the NIHR Journals Library website for further project information. The work was undertaken with the support of the Centre for the Development and Evaluation of Complex Interventions for Public Health Improvement (DECIPHer), a UK Clinical Research Collaboration (UKCRC) Public Health Research Centre of Excellence. Joint funding (MR/KO232331/1) from the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the Welsh Government and the Wellcome Trust, under the auspices of the UKCRC, is gratefully acknowledged. This study was designed and delivered in collaboration with the Bristol Randomised Trials Collaboration (BRTC), a UK CRC-registered clinical trials unit in receipt of NIHR clinical trials unit support funding. The intervention costs were jointly funded by South Gloucestershire Council and Wiltshire Council.


BMJ Open ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. e025278 ◽  
Author(s):  
Melanie Jay ◽  
Stephanie L Orstad ◽  
Soma Wali ◽  
Judith Wylie-Rosett ◽  
Chi-Hong Tseng ◽  
...  

IntroductionObesity is a major public health challenge and exacerbates economic disparities through employment discrimination and increased personal health expenditures. Financial incentives for weight management may intensify individuals’ utilisation of evidence-based behavioural strategies while addressing obesity-related economic disparities in low-income populations. Trials have focused on testing incentives contingent on achieving weight loss outcomes. However, based on social cognitive and self-determination theories, providing incentives for achieving intermediate behavioural goals may be more sustainable than incentivising outcomes if they enhance an individual’s skills and self-efficacy for maintaining long-term weight loss. The objective of this paper is to describe the rationale and design of the Financial Incentives foR Weight Reduction study, a randomised controlled trial to test the comparative effectiveness and cost-effectiveness of two financial incentive strategies for weight loss (goal directed vs outcome based) among low-income adults with obesity, as well as compared with the provision of health behaviour change resources alone.Methods and analysisWe are recruiting 795 adults, aged 18–70 years with a body mass index ≥30 kg/m2, from three primary care clinics serving residents of socioeconomically disadvantaged neighbourhoods in New York City and Los Angeles. All participants receive a 1-year commercial weight loss programme membership, self-monitoring tools (bathroom scale, food journal and Fitbit Alta HR), health education and monthly check-in visits. In addition to these resources, those in the two intervention groups can earn up to $750 over 6 months for: (1) participating in an intensive weight management programme, self-monitoring weight and diet and meeting physical activity guidelines (goal-directed arm); or (2) a ≥1.5% to ≥5% reduction in baseline weight (outcome-based arm). To maximise incentive efficacy, we incorporate concepts from behavioural economics, including immediacy of payments and framing feedback to elicit regret aversion. We will use generalised mixed effect models for repeated measures to examine intervention effects on weight at 6, 9 and 12 months.Ethics and disseminationHuman research protection committees at New York University School of Medicine, University of California Los Angeles (UCLA) David Geffen School of Medicine and Olive-View–UCLA Medical Center granted ethics approval. We will disseminate the results of this research via peer-reviewed publications, conference presentations and meetings with stakeholders.Trial registration numberNCT03157713.


BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e051226
Author(s):  
Alana M Rojewski ◽  
Lisa M Fucito ◽  
Nathaniel L Baker ◽  
Amanda M Palmer ◽  
Madeline G Foster ◽  
...  

IntroductionContinued smoking following a cancer diagnosis has substantial health risks including increased overall and cancer-specific mortality, risk of secondary malignancies, cancer treatment toxicity and risk of surgical complications. These risks can be mitigated by quitting smoking. The preoperative period represents a prime opportunity in which to administer robust smoking cessation treatment to both improve health and support and improve surgical outcomes. We will conduct a randomised clinical trial to evaluate the effectiveness of financial incentives delivered contingent on biochemically verified smoking abstinence (contingency management (CM)) in patients with cancer undergoing surgery.Methods and analysisThe study will take place across two study sites, and participants (N=282) who smoke, are diagnosed with or suspected to have any type of operable cancer and have a surgical procedure scheduled in the next 10 days to 5 weeks will be randomised to receive standard care plus Monitoring Only or CM prior to surgery. All patients will receive breath carbon monoxide (CO) tests three times per week, nicotine replacement therapy and counselling. The CM group will also earn payments for self-reported smoking abstinence confirmed by CO breath test ≤4 ppm on an escalating schedule of reinforcement (with a reset if they smoked). Point prevalence abstinence (PPA) outcomes (self-report of 7-day abstinence confirmed by CO≤4 ppm and/or anabasine ≤2 ng/mL) will be assessed on the day of surgery and 6 months after surgery. The effect of CM on 7-day PPA at the time of surgery and 6-month follow-up will be modelled using generalised linear mixed effects models.Ethics and disseminationThis study has been reviewed and approved by the Medical University of South Carolina Institutional Review Board. We will disseminate our scientific results through traditional research-oriented outlets such as presentations at scientific meetings and publications in peer-reviewed journals.Trial registration numberNCT04605458.


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