Table 1 Characteristics of the included studies by region, intervention type, disease, study design, and sample size
Characteristics | Detail characteristics | n (%) |
|---|---|---|
Region | South Asia (Bangladesh, India, Pakistan) | 11 (55) |
South America (Venezuela, Peru, Brazil, Bolivia) | 5 (25) | |
South-East Asia (Cambodia, South-East Asia) | 2 (10) | |
East Africa (Kenya) | 1 (5) | |
North America (Nicaragua) | 1 (5) | |
Intervention type | WASH intervention | 5 (25) |
Health education | 4 (20) | |
Community-based screening | 4 (20) | |
Socio-economic support | 2 (10) | |
Community-based vector control | 2 (10) | |
Behavior change intervention | 1 (5) | |
Social mobilization | 1 (5) | |
e- and m-health interventions | 1 (5) | |
Disease | TB | 7 (35) |
Diarrhea | 6 (45) | |
Dengue | 3 (15) | |
Influenza and ARI | 3 (15) | |
Hepatitis B and C | 1 (5) | |
Study design | Randomized controlled trials | 9 (45) |
Cluster randomized controlled trial | 6 (30) | |
Quasi-experimental | 3 (15) | |
Cohort study | 1 (10) | |
Pre-post study | 1 (10) | |
Sample size |  < 1000 | 4 (20) |
1000–3000 | 6 (30) | |
>3000 | 8 (40) |