Table 3 Data extraction fields

General information

Authors

Publication year

Journal

Country of study

Study characteristics

Intervention aim

Study aim

Study design

Study duration, including duration of pre-intervention period and duration of follow-up

Study participants

Description of population of interest

Method of recruitment

Inclusion/exclusion criteria for study participants

Sample size calculation/power calculation

Intervention characteristics

Enacting government authority

Description of policy intervention

Description of intervention groups

Number of intervention groups

Intervention duration and timing

Data analysis

Type of analyses conducted

Statistical tests conducted

Confounders

Intervention effects

Baseline and post-intervention results

Estimates of effect, including by time or subgroup as appropriate

Secondary outcomes: beneficial outcomes

Secondary outcomes: adverse events