Arnold School of Public Health Health Promotion,

Transcript:Arnold School of Public Health Health Promotion,:
Arnold School of Public Health Health Promotion, Education, and Behavior Social Media Message Type, Engagement, and Weight Change in a 6-month Behavioral Weight Loss Intervention Sarah Hales, LMSW Charis Davidson, MPH Brie Turner-McGrievy, PhD To examine Whether different types of social network messages differentially affect participant engagement If engagement with social media enhances weight loss as part of a 6-month behavioral weight loss intervention Objective The new diets trial The New Dietary Interventions to Enhance the Treatments for weight loss (New DIETs) study: 2-month weight loss intervention, with An optional 4-month follow-up period. Intervention: Months 0-2 Vegan, vegetarian, pesco-veg, and semi-veg: Weekly group meetings (8 total) Omnivorous group: Monthly meetings (3 total) Weekly newsletters Weekly e-mails All groups: Orientation and overview of diets in group meeting Diet information handouts Recipe books Intervention: Months 3-6 All groups, including the omnivorous group, met monthly face-to-face. All groups were provided with a private Facebook group for social support in between meetings. Data are a sub-analysis from a 2-month randomized weight loss study with 4-month follow-up support provided via private Facebook groups and monthly meetings. Counselors posted 5 different message types/week based on Social Cognitive Theory (similar to format of group classes). Order of messages each week was random except for weight messages (posted each Monday). Methods Facebook Message types targeting SCT constructs Facebook Message examples Responses to counselor-posted messages: Views Likes Comments and poll votes Engagement was dichotomized using a median split (of total likes, comments, and poll votes over course of the study) Measuring Engagement Baseline, 2 months, 6 months: Height (SECA 213, using a calibrated stadiometer) Weight (SECA 869, Hamburg, Germany, calibrated digital scale accurate to 0.01 kg) Facebook message preference Assessed in the survey administered at 6 months Other measures Participants were mostly highly educated (94% college or higher), white (79%), females (73%), with a mean age of 48.5 ± 8.3 years. Demographics Which message type prompted the most user engagement? Mean number of comments and poll votes per post in response to different types of counselor facebook messages Sig greater than nutr news & recipes, P<0.05 F=60.3, P<0.001 Mean number of likes to different types of counselor facebook messages Sig greater than weight & recipe, P<0.05 F=20.6, P<0.001 Exposure to Different types of Counselor Facebook messages P=0.67 Exposure was similar for all message types. Posts asking participants to vote in a poll or request suggestions for the group are