Table 4

Average probability of always or almost always using a helmet, for riders under age 16; values are % (SE)

Average probability of always or almost always using a helmet, by rider category
Condition for estimating average probability of helmet useAll ridersRiders from states with helmet lawsRiders from states without laws
Helmet laws as they existed at time of 1998 survey58.6 (1.5)72.3 (1.9)49.6 (1.8)
Assuming all states had helmet laws69.9 (1.2)72.3 (1.9)68.3 (1.6)
Assuming no states had helmet laws51.5 (1.4)54.2 (2.2)49.6 (1.8)