Univariate analysis of the risk factors for allergic and non-allergic asthma in cross-country skiers represented as ORs with 95% CIs
| Non-allergic asthma n=55 | Allergic asthma n=36 | |||||
| OR | 95% CI | P value | OR | 95% CI | P value | |
| Age | 1.05 | 1.00 to 1.09 | 0.032 | 1.07 | 1.02 to 1.12 | 0.05 |
| 100 hours more training per year | 1.35 | 1.16 to 1.58 | <0.001 | 1.18 | 0.99 to 1.41 | 0.064 |
| Parents or siblings with asthma | 1.63 | 0.91 to 2.91 | 0.098 | 2.40 | 1.19 to 4.84 | 0.014 |
| Female gender | 1.00 | 0.56 to 1.79 | 0.992 | 0.76 | 0.37 to 1.56 | 0.46 |
| Allergic rhinitis | 0.69 | 0.38 to 1.25 | 0.224 | 16.20 | 4.86 to 53.95 | <0.001 |
| 50 FIS points less | 0.87 | 0.73 to 1.04 | 0.137 | 1.15 | 0.92 to 1.43 | 0.217 |
FIS, International Ski Federation.