Source | n | Age | Distribution of sex (% male) | Administrator | Country | Setting | Sampling |
---|---|---|---|---|---|---|---|
Dunton et al. [37] | 87 47a | 15.02 ± 0.72 | 0 | adol | USA | intervention studyd | n.a. |
Durant et al. [38] | 187adol 171padol 116pchn | 12-18adol 5-11chn | 40.5adol/46.8adol 47.8chn | adol, p | USA | community | convenience sample |
Dwyer et al. [45] | 95 | 3.8 ± 0.74 | 53 | p | Australia | school, hospital, university | convenience sample |
Erwin [39] | 64 | 10.27 ± 0.74 | 31 | chn | USA | elementary school | cluster sample |
Evenson et al. [40] | 610 480b | 10-15 | 0 | adol | USA | school | cluster sample |
Forman et al. [41] | 187adol 287p 162a | 12.0 ± 3.6 | 48 | adol, p | USA | community | convenience sample |
14.7 ± 1.7 | |||||||
Huang et al. [46] | 303 160b | 11.1 ± 0.9 | 47.2 | chn | Hong Kong | primary school | cluster sample |
Hume et al. [44] | 39 | 11.1 ± 0.7 | 54 | chn | Australia | school class | cluster sample |
McMinn et al. [35] | 24c | 4 | 70.8c | p | GB | community | n.a. |
389 | 49.8 | ||||||
Norman et al. [42] | 76 | 13 ±1.1 | 45 | adol | USA | after school programms | convenience sample |
Ommundsen et al. [43] | 3958 | 9.65 ± 0.42chn | 47.4 | chn, adol | Norway, Denmark, Portugal, Estonia | school | two stage cluster sample |
15.49 ± 0.50adol | |||||||
Pirasteh et al. [47] | 545 93b | 15.74 ± 0.77 | 0 | adol | Iran | school | cluster sample |
Rosenberg et al. [36] | 171adol 171padol, a 116pchn | 14.6adol 8.3chn | 49.3adol 47.8chn | adol, p | USA | community | convenience sample |