Study characteristics | Outcomes assessed | |||||
Controlled | Randomised intervention | Investigators blinded | Educational (including reported behaviours) | Behavioural (observed) | Injuries | |
Clamp and Kendrick16 | X | X | ||||
Kendrick et al 17 | X | X | X | X | X | |
Gielen et al 18 | X | X | X | X | ||
Nansel et al 19 | X | X | X | |||
Mock et al 20 | X | X | ||||
Tan et al 21 | X | X | X | X | X | |
Watson et al 22 | X | X | X | X | X | |
McDonald et al 23 | X | X | X | |||
Kendrick et al 24 | X | X | X | X | ||
Sangvai et al 25 | X | X | X | X | X | |
Pless et al 26 | X | X | X | X | ||
Nansel et al 27 | X | X | X | X | ||
Powell et al 28 | X | X | X | |||
van Beelen et al 29 | X | X | X | |||
Franz et al 30 | X | |||||
Brixey et al 31 | X | X |