Maintaining weight loss is a significant challenge in combating obesity. The goal of Maintaining Activity and Nutrition through Technology-Assisted Innovation in Primary Care (MAINTAIN-pc) is to evaluate the use of tools delivered through an electronic health record (EHR) and patient portal, with or without health coach support, to help primary care patients maintain weight loss. EHR tools include flowsheets, standardized surveys, and secure patient messaging. Inclusion criteria were age 18-75years, voluntary 5% weight loss in the past 2years with prior BMI≥25kg/m2, and no bariatric procedures in past 5years. Participants were randomized 1:1 to tailored online coaching with EHR tracking tools (CC) or EHR tracking tools alone (TO). We screened 721 individuals between October 2013 and February 2015; 194 participants enrolled (98 CC; 96 TO). The most common reasons for not enrolling included lack of interest (56%), not meeting age or weight loss criteria (17%), and no verified prior weight loss (10%). At baseline, participants were 53.4 (SD 12.2) years old, 74% female, and 88% White; 95% reported moderate physical activity. Average weight and BMI at baseline were 189.1 (SD 42.1) lbs and 30.4 (5.9) kg/m2, respectively. Pre-weight loss BMI was 34.4 (SD 6.5) kg/m2. Participants lost an average of 11.3% (SD 6.6) of their body weight before enrolling. Demographic and clinical characteristics did not differ by randomized group. The study successfully identified and recruited primary care patients with recent voluntary weight loss for participation in a weight maintenance program that uses EHR-based tools.
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