Table 2.

Univariable generalized estimating equation models determining associations with hamstring strain injury (HSI).^*

	OR (95% CI)	p-value
Age	0.83 (0.68, 1.01)	0.06
BMI	1.03 (0.98, 1.08)	0.27
Female Sex	0.60 (0.32, 1.14)	0.12
Sport †		<0.001
Football	REF
Soccer	0.31 (0.14, 0.66)	0.008
Track	2.59 (1.28, 5.27)	0.003
Prior HSI	8.41 (5.18, 13.66)	<0.001
Prior Lower Extremity Surgery	0.80 (0.38, 1.70)	0.57
Total Force (N/kg) ‡	0.99 (0.93, 1.05)	0.74
Force Asymmetry (unit=10%) ^	1.35 (0.87, 2.09)	0.23

^*Univariable models were performed separately for each variable of interest to detect an association with HSI. Models accounted for repeated measures within athlete.

^†Basketball was removed from this model due to no HSI observed during study period

^‡Normalized to body mass

^{^}Unit represents the unit increase used for interpretation of odds ratio and 95% CI. Unit = 1 if not otherwise specified.