Table 3 Checklist of items to consider in data collection or data extraction from Cochrane Handbook [1]

Source

 • Study ID (created by review author)

 • Report ID (created by review author)

 • Review author ID (created by review author)

 • Citation and contact details

Eligibility

 • Confirm eligibility for review

 • Reason for exclusion

Methods

 • Study design

 • Total study duration

 • Sequence generation^a

 • Allocation sequence concealment^a

 • Blinding^a

 • Other concerns about bias^a

Participants

 • Total number

 • Setting

 • Diagnostic criteria

 • Age

 • Sex

 • Country

 • [Co-morbidity]

 • [Socio-demographics]

 • [Ethnicity]

 • [Date of study]

Interventions

 • Total number of intervention groups.

For each intervention and comparison group of interest:

 • Specific intervention

 • Intervention details (sufficient for replication, if feasible)

 • [Integrity of intervention]

Outcomes

 • Outcomes and time points (i) collected; (ii) reported^a

For each outcome of interest:

 • Outcome definition (with diagnostic criteria if relevant)

 • Unit of measurement (if relevant)

 • For scales: upper and lower limits, and whether high or low score is good

Results

 • Number of participants allocated to each intervention group.

For each outcome of interest:

 • Sample size

 • Missing participants^a

 • Summary data for each intervention group (e.g. 2 × 2 table for dichotomous data; means and SDs for continuous data)

 • [Estimate of effect with confidence interval; P value]

 • [Subgroup analyses]

Miscellaneous

 • Funding source

 • Key conclusions of the study authors

 • Miscellaneous comments from the study authors

 • References to other relevant studies

 • Correspondence required

 • Miscellaneous comments by the review authors