Table 1 Data extraction table (adopted from Howlett et al. [53])

General

Author(s); article title; type of publication (e.g., published article); country of origin

Methods

Design: aims/objectives of the study; target behaviour/s; study design (including control groups); inclusion and exclusion criteria; recruitment and sampling methods (including unit of randomization and blinding); unit of allocation; power calculations

Participants: population type; inclusion and exclusion criteria; number of participants; age; gender; weight status; CD4 count; ART; ethnicity

Intervention features

General description of the intervention; frequency and length of sessions; intervention duration; intervention setting; intervention provider; delivery format; behaviour change techniques; theoretical basis; Mean health-related outcome measure at baseline and at post-intervention; potential weakness of the intervention

Outcomes

Primary outcome (cardiometabolic outcomes): method and unit of measurement; type of measurement (e.g., subjective); follow-up duration and frequency; mean and standard deviation at baseline, post intervention, and follow-up; effectiveness at post intervention and follow-up; effect size; attrition rate

Secondary outcomes (psychosocial outcomes): method and unit of measurement; type of measurement (e.g., subjective); follow-up duration and frequency; mean and standard deviation at baseline, post intervention, and follow-up; effectiveness at post intervention and follow-up; effect size; attrition rate