Table 1.

Inclusion and exclusion criteria of the included reviews

	Inclusion criteria	Exclusion criteria
Population	Adults aged 18 or older with overweight or obesity (BMI ≥ 25 kg/m2, or BMI ≥ 23 kg/m2 in people of Asian ethnicity)	Pregnant people or those in the postpartum period; people who have had or are waiting for bariatric surgery; people waiting for other types of surgery
Intervention	eHealth weight loss or weight loss maintenance interventions	No eHealth weight loss intervention; information-only interventions; main focus on the treatment of a disease
Control	Not applicable	Not applicable
Outcome	Weight change (kg or %) from baseline or change in BMI (kg/m2)	Weight loss not a primary outcome (main focus, e.g., methodology, theory use, acceptability, or attrition)
Study design	Systematic reviews, may include both RCTs and/or NRSIs	Not a systematic review

BMI body mass index (calculated as weight in kilograms divided by height in meters squared), RCT randomized controlled trial, NRSI non-randomized study of intervention