Relative difference in mean costs and associated factors among RTIs involved with motorcycle and having head as the principal injured region (335 motorcyclists with reported helmet use)
| Multivariable analyses* | |||
| Relative difference | 95% CI | p Value | |
| Wearing helmet | |||
| Yes | 1.00 | ||
| No | 1.41 | 1.17 to 1.71 | <0.001 |
| LOS (days) | 1.13 | 1.11 to 1.15 | <0.001 |
↵* Controlling for demographic characteristics including age, gender, occupation, insurance status and income level.
LOS, length of hospital stay; RTIs, road traffic injuries.