OR (95% CI)* | P value† | |
Gender, women vs men | 0.69 (0.57 to 0.84) | <0.001 |
Age, years | 1.01 (1.00 to 1.02) | 0.016 |
Running years | <0.001 | |
1–2 years vs <1 year | 0.92 (0.38 to 2.21) | 0.849 |
3–5 years vs <1 year | 1.62 (0.72 to 3.64) | 0.243 |
6–9 years vs <1 year | 1.67 (0.74 to 3.74) | 0.214 |
≥ 10 years vs <1 year | 2.45 (1.10 to 5.43) | 0.028 |
Intensity most intensive training | 0.102 | |
Intensive vs moderately intensive | 1.24 (0.98 to 1.58) | 0.076 |
Very intensive vs moderately intensive | 1.34 (1.01 to 1.78) | 0.043 |
Warming up, no vs yes | 0.78 (0.64 to 0.96) | 0.018 |
*OR=exp (beta). A value <1 indicates a decreased risk and a value >1 indicates an increased risk.
†The selection of risk factors in the multivariable logistic regression model was based on Akaike’s information criterion (AIC), corresponding to a p value of 0.157 for a predictor with one regression coefficient.29