Table 3

 Change from baseline helmet use in studies evaluating the effectiveness of legislation on helmet use in cyclists

Study IDPre-intervention proportionPost-intervention proportionΔ
1. Cote, 1992447+43
2. Cameron, 19943175+44
3. Ni, 19972451+27
4. Foss, 20003960+21
5. Kanny, 20013379+46
6. Leblanc, 20023884+46
7. Thomas, 20023237+5
8. Delamater, 2003761+54
9. Liller, 2003757+50
10. Parkin, 20034466+22
11. Hagel, 20054353+10
12. Povey, 20055991+32