Multiple logistic regression analyses of relationship between head injuries and potential risk factors in 2002, 2010 and 2011
| 2002 (578/3276) | 2010 (673/4396) | 2011 (530/3436) | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | p Value | OR (95% CI) | p Value | OR (95% CI) | p Value | |
| Helmet use | <0.001 | 0.02 | 0.13 | |||
| No | 1 | 1 | 1 | |||
| Yes | 0.45 (0.34 to 0.60) | 0.79 (0.63 to 0.98) | 0.80 (0.60 to 1.06) | |||
| Age | 0.002 | 0.03 | 0.78 | |||
| <13 | 1 | 1 | 1 | |||
| 13–20 | 0.69 (0.49 to 0.96) | 0.80 (0.61 to 1.06) | 0.89 (0.65 to 1.23) | |||
| >20 | 0.55 (0.39 to 0.78) | 0.90 (0.68 to 1.20) | 0.93 (0.66 to 1.29) | |||
| Gender | 0.003 | 0.02 | 0.10 | |||
| Male | 1 | 1 | 1 | |||
| Female | 0.72 (0.59 to 0.90) | 0.78 (0.64 to 0.95) | 0.89 (0.65 to 1.22) | |||
| Nationality | 0.002 | 0.006 | 0.02 | |||
| Norwegian | 1 | 1 | 1 | |||
| Swedish | 0.58 (0.44 to 0.77) | 0.90 (0.70 to 1.17) | 0.98 (0.72 to 1.35) | |||
| Danish | 0.80 (0.61 to 1.06) | 0.62 (0.47 to 0.81) | 0.70 (0.49 to 0.99) | |||
| Other | 0.78 (0.53 to 1.14) | 0.95 (0.69 to 1.13) | 0.82 (0.65 to 1.04) | |||
| Ability | <0.001 | 0.77 | 0.32 | |||
| Expert | 1 | 1 | 1 | |||
| Good | 0.78 (0.58 to 1.03) | 1.13 (0.80 to 1.37) | 1.01 (0.74 to 1.37) | |||
| Intermediate | 0.55 (0.41 to 0.75) | 1.02 (0.77 to 1.34) | 0.73 (0.56 to 0.94) | |||
| Beginner | 0.55 (0.39 to 0.76) | 0.91 (0.65 to 1.25) | 0.92 (0.61 to 1.37) | |||
| Location | <0.005 | 0.03 | 0.17 | |||
| On piste | 1 | 1 | 1 | |||
| Off-piste | 0.96 (0.69 to 1.34) | 0.95 (0.74 to 1.24) | 0.77 (0.53 to 1.13) | |||
| Park area | 1.80 (1.30 to 2.48) | 1.18 (0.88 to 1.58) | 1.16 (0.90 to 1.50) | |||
| Lift | 1.94 (1.04 to 3.65) | 2.35 (1.06 to 5.26) | 1.47 (0.63 to 3.42) | |||
| Equipment | 0.12 | 0.12 | 0.04 | |||
| Alpine | 1 | 1 | 1 | |||
| Snowboard | 0.79 (0.63 to 0.98) | 0.90 (0.73 to 1.14) | 0.72 (0.56 to 0.94) | |||
| Telemark | 0.61 (0.45 to 1.06) | 0.75 (0.39 to 1.42) | 0.90 (0.41 to 1.98) | |||
ORs are shown with 95% CIs.