From: Motorcycle helmet effectiveness in reducing head, face and brain injuries by state and helmet law
Characteristic | Partial helmet law | Universal helmet law | P-value* |
---|---|---|---|
Number of motorcycle operators | N = 28,207 | N = 45,552 | |
Helmet used | 42 % | 88 % | <0.01 |
Age (Median) | 37 | 36 | 0.52 |
Male | 93 % | 93 % | 0.77 |
Single Vehicle Crash | 39 % | 45 % | <0.01 |
Crash at Intersection | 36 % | 40 % | <0.01 |
Night time | 18 % | 17 % | <0.01 |
Speed relateda | 10 % | 17 % | <0.01 |
Suspicion of alcohol or drugsa | 9 % | 5 % | <0.01 |
Rural locationa | 17 % | 31 % | <0.01 |
Poor Surface Conditions | 6 % | 7 % | <0.01 |
Crash record linked to a medical record | 55 % | 58 % | <0.01 |
Died at the scene | 3 % | 3 % | 0.62 |