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

^R reference values.* variables entered into multivariable logistic analysis for injured vs. non-injured runners.