Table 5. Results of univariate logistic regression analysis, injury versus injury-free runners.
Variable OR (95% CI) P
Sex (male R) 0.85 (0.65-1.13) 0.27
Age 1.0 (0.98-1.02) 0.97
Obsessive passion 1.36 (1.22-1.52) <0.001*
BREQ-2 1.04 (0.99-1.08) 0.122*
Sleep quality 1.24 (1.17-1.31) <0.001*
RAND 36-items 0.97 (0.95-0.98) <0.001*
SQUASH 1.00 (1.00-1.00) 0.43
Running distance (km)
  Up to 10R Reference
  Between 10 & 20 1.0 (0.72-1.39) 0.99
  Over 20 1.75 (1.24-2.48) 0.002*
Running Experience (years)
  Up to 2R Reference
  Between 2 & 5 0.80 (0.57-1.12) 0.20
  Over 5 1.27 (0.87-1.83) 0.22
Training sessions (No/pw)
  Up to 3R Reference
  Over 3 0.91 (0.67-1.22) 0.52
Running duration (min/session)
  Up to 60R Reference
  Over 60 1.54 (1.16-2.05) 0.003*
BMI
  Normal R Reference
  Overweight 1.45 (1.01-2.09) 0.043*
  Obese 0.61 (0.17-2.19) 0.45
Foot type
  Normal R Reference
  Pes planus 2.12 (1.42-3.17) <0.001*
  Pes cavus 2.92 (1.48-5.74) 0.002*
Training surface
  Hard 1.30 (1.14-1.48) <0.001*
  Soft 0.95 (0.78-1.15) 0.60
  Treadmill 0.88 (0.75-1.02) 0.08*
  Others 1.11 (0.90-1.41) 0.35
Running company (alone R) 1.28 (0.95-1.73) 0.11*
Running program (no R) 1.35 (1.02-1.78) 0.036*
Other sports (No R) 1.50 (1.06-2.12) 0.022*
Special shoes (yes R) 1.24 (0.92-1.68) 0.16*
Special insole (yes R) 1.32 (1.03-2.27) 0.11*
Warm-up (yes R) 1.48 (0.87-2.50) 0.15*
Cool-down (yes R) 0.97 (0.67-1.41) 0.86
Foot strike
  Rearfoot R Reference
  Midfoot 1.22 (0.94-2.00) 0.088*
  Forefoot 0.98 (0.68-1.42) 0.92
* variables entered into multivariable logistic analysis for injured vs. non-injured runners.
R reference values.