Table 1 Inclusion and exclusion criteria.
PICOS domain | Inclusion | Exclusion |
|---|---|---|
Population | 18+ years Living with overweight or obesity, defined as one of the following weight measurements: • BMI > 25 • Waist circumference (+ 88 female, + 102 males) | Pregnant women Post-surgery patients Inpatients Studies where the entire population have one of the following: • Mental health condition • Learning disability • Presence of a physical health/disease condition which could impact the content of the intervention |
Intervention | Behavioural weight management programmes Use of behaviour change techniques Focus/goal is weight loss | Studies and interventions whose primary goal is not weight loss or have been altered to include more than a weight loss element, or are aimed at groups where the intervention would need to be adapted for use Studies only testing diet or meal replacements without a behaviour change element Studies targeting multiple health problems at once (i.e. obesity and alcohol use) Studies focusing on weight gain prevention |
Comparator/outcomes | Weight outcomes (baseline and end of participation weights or %/kg lost) Behaviour change techniques used (explicit or described) One of the following: • Information on barriers/facilitators • Participant feedback on the intervention |  |
Study | Intervention studies Qualitative interviews Qualitative focus groups Process evaluation studies Set in Western high- and middle-income countries | Case studies Systematic reviews |