Study design (n) | Sample size and (n) | Follow up period |
---|---|---|
RCT (23) Quantitative observational (13) Mixed Methods Evaluation (4) Qualitative evaluation (5) RCT pilot (6) RCT abstract (4) RCT protocol (4) RCT secondary analysis (2) Non-randomized controlled trial (2) Cluster RCT (1) | < 10 (3) 10–50 (24) 50–100 (16) 100–200 (18) > 200 (2) Not stated (1) | < 1 month (7) 1–3 months (15) 3–6 months (6) 4–6 months (20) 7–12 months (6) > 13 months (2) Unclear (7) Varies (1) |