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An automated internet behavioral weight-loss program by physician referral: a randomized controlled trial.

ABSTRACT: To evaluate 3- and 6-month weight-loss outcomes achieved when physicians refer overweight/obese patients to an automated 3-month Internet-based behavioral weight-loss intervention.A total of 154 patients age 18-70 years with a BMI between 25 and 45 kg/m(2) and access to a personal computer and the Internet were randomly assigned to 3 months of Internet behavioral intervention (IBI; n = 77) with 12 weekly videos teaching behavioral weight-loss skills, a platform for submitting self-monitored data, and automated feedback or an education-only Internet-delivered eating and activity control group (IDEA; n = 77). Outcome measures were weight loss after 3 months (primary outcome) and 6 months and changes in weight-control behaviors (secondary outcomes).In intent-to-treat analyses with baseline weight carried forward for missing data, IBI produced significantly larger mean (SD) weight losses than IDEA at 3 months (5.5 kg [4.4] vs. 1.3 kg [2.1]) and 6 months (5.4 kg [5.6] vs. 1.3 kg [4.1]) (P < 0.001). Participants in IBI compared with IDEA were also more likely to achieve a clinically significant weight loss of 5% of initial body weight at 3 months (53.3 vs. 9.1%) and 6 months (48.1 vs. 15.6%) (P < 0.001) and reported more frequent use of weight control-related strategies.Physician referral to an Internet-based behavioral weight-loss intervention produced clinically significant weight loss for over half of the patients studied. Further research is needed to determine the effectiveness of implementing this intervention more broadly within diverse health care settings.

SUBMITTER: Thomas JG

PROVIDER: S-EPMC4274778 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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An automated internet behavioral weight-loss program by physician referral: a randomized controlled trial.

Thomas J Graham JG Leahey Tricia M TM Wing Rena R RR

Diabetes care 20141117 1

<h4>Objective</h4>To evaluate 3- and 6-month weight-loss outcomes achieved when physicians refer overweight/obese patients to an automated 3-month Internet-based behavioral weight-loss intervention.<h4>Research design and methods</h4>A total of 154 patients age 18-70 years with a BMI between 25 and 45 kg/m(2) and access to a personal computer and the Internet were randomly assigned to 3 months of Internet behavioral intervention (IBI; n = 77) with 12 weekly videos teaching behavioral weight-loss ...[more]

PMID: 25404659

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Project description:BACKGROUND:Internet-based cognitive behavioral therapy (ICBT) is a treatment approach recently developed and studied to provide frontline treatment to adolescents with anxiety disorders. OBJECTIVE:This study aimed to pilot procedures and obtain data on methodological processes and intervention satisfaction to determine the feasibility of a definitive randomized controlled trial (RCT) to test the effectiveness of a self-managed ICBT program, Breathe (Being Real, Easing Anxiety: Tools Helping Electronically), for adolescents with anxiety concerns. METHODS:This study employed a two-arm, multisite, pilot RCT. Adolescents aged 13 to 17 years with a self-identified anxiety concern were recruited online from health care settings and school-based mental health care services across Canada between April 2014 and May 2016. We compared 8 weeks of ICBT with ad hoc telephone and email support (Breathe experimental group) to access to a static webpage listing anxiety resources (control group). The primary outcome was the change in self-reported anxiety from baseline to 8 weeks (posttreatment), which was used to determine the sample size for a definitive RCT. Secondary outcomes were recruitment and retention rates, a minimal clinically important difference (MCID) for the primary outcome, intervention acceptability and satisfaction, use of cointerventions, and health care resource use, including a cost-consequence analysis. RESULTS:Of the 588 adolescents screened, 94 were eligible and enrolled in the study (49 adolescents were allocated to Breathe and 45 were allocated to the control group). Analysis was based on 74% (70/94) of adolescents who completed baseline measures and progressed through the study. Enrolled adolescents were, on average, 15.3 years old (SD 1.2) and female (63/70, 90%). Retention rates at 8 weeks were 28% (13/46; Breathe group) and 58% (24/43; control group). Overall, 39% (14/36) of adolescents provided feedback on completion of the Breathe program. Adolescents' scores on a satisfaction survey indicated a moderate level of satisfaction. All but one adolescent indicated that Breathe was easy to use and they understood all the material presented. The most frequent barrier identified for program completion was difficulty in completing exposure activities. The power analysis indicated that 177 adolescents per group would be needed to detect a medium effect size (d=0.3) between groups in a definitive trial. Data for calculating an MCID or conducting a cost-consequence analysis were insufficient due to a low response rate at 8 weeks. CONCLUSIONS:Adolescents were moderately satisfied with Breathe. However, program adjustments will be needed to address attrition and reduce perceived barriers to completing key aspects of the program. A definitive RCT to evaluate the effectiveness of the program is feasible if protocol adjustments are made to improve recruitment and retention to ensure timely study completion and increase the completeness of the data at each outcome measurement time point. TRIAL REGISTRATION:ClinicalTrials.gov NCT02059226; http://clinicaltrials.gov/ct2/show/NCT02059226.

Project description:Controlling food portion sizes can help reduce energy intake, but the effect of different portion-control methods on weight management is not known. In a 1-year randomized trial, we tested whether the efficacy of a behavioral weight-loss program was improved by incorporating either of the two portion-control strategies instead of standard advice about eating less.The Portion-Control Strategies Trial included 186 women with obesity (81%) or overweight (19%). Participants were randomly assigned to one of three equally intensive behavioral programs, consisting of 19 individual sessions over 12 months. The Standard Advice Group was instructed to eat less food while making healthy choices, the Portion Selection Group was instructed to choose portions based on the energy density using tools such as food scales and the Pre-portioned Foods Group was instructed to structure meals around pre-portioned foods such as single-serving main dishes, for which some vouchers were provided. In an intention-to-treat analysis, a mixed-effects model compared weight loss trajectories across 23 measurements; at month 12, weight was measured for 151 participants (81%).The trajectories showed that the Pre-portioned Foods Group initially lost weight at a greater rate than the other two groups (P=0.021), but subsequently regained weight at a greater rate (P=0.0005). As a result, weight loss did not differ significantly across groups at month 6 (mean±s.e. 5.2±0.4?kg) or month 12 (4.5±0.5?kg). After 1 year, measured weight loss averaged 6% of baseline weight. The frequency of using portion-control strategies initially differed across groups, then declined over time and converged at months 6 and 12.Incorporating instruction on portion-control strategies within a 1-year behavioral program did not lead to a greater weight loss than standard advice. Using pre-portioned foods enhanced early weight loss, but this was not sustained over time. Long-term maintenance of behavioral strategies to manage portions remains a challenge.

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An automated internet behavioral weight-loss program by physician referral: a randomized controlled trial.

Publications

An automated internet behavioral weight-loss program by physician referral: a randomized controlled trial.

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