|
Category
|
N
|
%
|
|---|
|
Study design
|
|
Cluster RCT
|
47
|
94.0
|
|
RCT
|
3
|
6.0
|
|
Duration of interventions, months
|
|
3–12
|
32
|
64.0
|
|
> 12
|
18
|
36.0
|
|
Types of schools
|
|
Elementary
|
43
|
86.0
|
|
Secondary
|
6
|
12.0
|
|
Mixed
|
1
|
2.0
|
|
Income level of country
|
|
High-income
|
40
|
80
|
|
Middle income
|
10
|
20
|
|
Types of interventions
|
|
Single-component (n = 15)
|
|
PA
|
7
|
3.5
|
|
HE
|
7
|
3.5
|
|
SP
|
1
|
2.0
|
|
Multi-component (n = 35)
|
|
PA + SP
|
2
|
3.9
|
|
HE+SP
|
5
|
9.8
|
|
PA + HE+/−SP
|
10
|
19.6
|
|
PA + DI+/−SP
|
3
|
5.9
|
|
HE+DI+/−SP
|
7
|
13.7
|
|
PA + HE+DI+/−SP
|
8
|
15.7
|
- RCT randomized controlled trial, PA physical activity, HE health education, DI dietary improvement, SP school policy; “+/−”: with or without
