Table 2 Study characteristics
Study characteristics | Number (%) studies, n = 32 |
|---|---|
Study design | |
RCT or cluster RCT | 21 (65.6) |
Quasi-experimental | 6 (18.6) |
Before and after | 3 (9.4) |
Prospective study with non equivalent comparison group | 1 (3.1) |
Simulated before and after design | 1 (3.1) |
Quality | |
High | 3 (9.4) |
Moderate | 14 (43.8) |
Low | 15 (46.9) |
Country where the study was conducted | |
USA | 22 (68.8) |
UK | 5 (15.6) |
Brazil | 2 (6.2) |
Switzerland | 1 (3.1) |
France | 1 (3.1) |
Australia | 1 (3.1) |
Target population | |
Low income families (general population) | 13 (40.6) |
Hispanic low income families | 8 (25.0) |
Preschools with high migrant population | 1 (3.1) |
Low income racial minority families | 1 (3.1) |
Black preschool children and their families | 2 (6.2) |
Rural low income mothers | 1 (3.1) |
Adolescent low income mothers | 1 (3.1) |
Young (<22 years) Black low income mothers | 2 (6.2) |
Travelling (gypsy) mothers | 1 (3.1) |
Indigenous – Native Indian/Alaskan Native | 1 (3.1) |
Indigenous – Native Indian | 1 (3.1) |
Delivery agents (n = 35) | |
Paraprofessionals (e.g. community health workers, health educators, peer educators, facilitators) | 13 (40.6) |
Trained volunteers | 3 (9.4) |
Dietitian/nutritionist | 4 (12.5) |
PHC staff (physicians, nurses and medical assistants) | 2 (6.2) |
Nurses | 1 (3.1) |
Multidisciplinary team | 1 (3.1) |
Preschool teachers | 3 (9.4) |
Trained child educators | 2 (6.2) |
Researcher | 1 (3.1) |
Play professional | 1 (3.1) |
Video only | 1 (3.1) |
Unclear | 1 (3.1) |