Wang 2017.

Study name	Clinic versus online social network–delivered lifestyle interventions: protocol for the Get Social noninferiority randomized controlled trial
Methods	RCT
Participants	Participants who have a BMI between 27.0 and 45.0 kg/m2, are between the ages of 18 and 65 years, are a current social media user with a smartphone and interested in losing weight.
Interventions	Intervention: participants in the Get Social intervention will receive life counselling in a private Twitter group for 12 months. The intervention is based on the Diabetes Prevention Program, an evidence‐based weight loss program targeting lifestyle changes. Tweets will be in the form of text only; a combination of text and an image of an excerpt of the original materials; a combination of text and an image that reflects the content of the text, polls, and text; and a link to a study blog post or other online resource elaborating the topic. Participants will receive notifications (e.g., emails and pop‐ups) for new Tweets and are asked to report their weight change from the previous week by replying to the Tweets. Newsletters will be emailed weekly to encourage patients to engage in the Twitter group and to highlight content. Control: participants will receive 12 months of lifestyle counselling through 90 min session clinic‐based group meetings. this control is also based on the Diabetes Prevention Program, an evidence‐based weight loss program targeting lifestyle changes.
Outcomes	Main: weight loss (digital scale). Secondary: energy intake (24‐hour diet recall interviews ASA24), physical activity (74‐item Arizona Activity Frequency Questionnaire), administrative costs, interventionist costs, participant costs. Other: treatment retention, acceptability and burden.
Starting date	Recruitment began in August 2016.
Contact information	Sherry L Pagoto, PhD Phone: 1 860 486 2313 Email: sherry.pagoto@uconn.edu
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