Assessments
weight retention, depressive, depressive symptoms, binge eating disorder, weight loss
Participants completed assessments at baseline, 6 months (postintervention), and 12 months, and filled out brief weekly surveys during the intervention period, as described in detail elsewhere [At baseline, participants completed an in-person study visit that included providing informed consent, height and weight measurement, and screenings for elevated depressive symptoms and binge eating disorder. Study staff also provided instructions for downloading and using the MyFitnessPal app and instructions for using the battery settings to report Facebook app use (iPhone users) or a free app to track time on Facebook (Android users). Following this visit, participants completed a 30-minute web-based survey that included demographic and clinical characteristics (including prepregnancy weight for calculation of postpartum weight retention at baseline) and other baseline measures. Next, research staff contacted participants’ primary care provider or obstetrician or gynecologist for medical clearance. After completing their baseline visit and survey, participants completed a 60-minute webinar with other participants to orient them to the scientific process, review study procedures, and discuss the barriers and advantages of each study condition [At the end of the 6-month intervention, participants attended a focus group with other members of their weight loss group to provide qualitative feedback on their experiences in the study. The focus groups started out by asking general questions about participants’ experiences in the intervention (eg, “Overall, what do you think of this program?”, “What about this program did you find most helpful?”, and “How could we improve this weight loss program?”), transitioned to asking questions specific to each treatment modality (eg, “What influenced whether you commented on a post or comment?” in the Facebook condition and “How difficult was it for you to attend the sessions?” in the in-person condition), and finally prompted for any additional feedback (ie, “Do you have any other feedback about this program?”). Participants also completed a 30- to 45-minute web-based survey that included questions about contamination, acceptability, depressive symptoms (EPDS [At 12 months, participants in wave 1 completed an in-person visit to measure weight and completed a 30-minute web-based survey that included measures of depressive symptoms (EPDS [