Table 1 Data extraction form

Characteristics of included studies

 Study ID (author name and year)

 Author email

 Country

 Study design (RCT/cluster RCT)

Participants

 Total number

 Age group (range/average age)

 Setting (including location and social context)

 Method of recruitment of participants

 Clusters (if applicable, no., type, no. people per cluster, no of sites)

 Baseline imbalances

 Withdrawals and exclusions (if not provided below by outcome)

 Sex (male to female ratio)

 Race/ethnicity

 Any special group/conditions/relevant social demographics

Intervention/control group (separate section for each group)

 Unit of allocation (group/individual)

 No. randomised to group (specify whether no. people or clusters; if clusters, number of sites)

 Intervention description (content, components)

 Timing (frequency, duration of each episode)

 Delivery (mechanism, medium, intensity)

 Providers (e.g. no., profession, training, ethnicity etc. if relevant)

 Co-interventions

 Integrity of delivery

 Compliance

Outcomes (separate section for each outcome)

 Outcome name

 Time points measured

 Any outcome definition/scale

 Person measuring/reporting

 Unit of measurement

 Is outcome tool validated?

 Effect measures: point estimate, confidence intervals

Additional comments: