Table 4.

Multivariable generalized estimating equation model to determine the association between eccentric strength (between limb maximum force asymmetry) and subsequent hamstring strain injury (HSI), while controlling for sport, age, and prior HSI.

	OR (95% CI)	p-value
Force Asymmetry (Unit=10%) ^	1.41 (0.91, 2.19)	0.19
Sport		0.005
Football	REF	REF
Soccer	0.43 (0.22, 0.85)	0.02
Track	1.37 (0.66, 2.85)	0.39
Age	0.82 (0.66, 1.01)	0.07
Prior HSI	5.52 (3.06, 9.98)	0.03

Note: Basketball athletes were removed from the model because no injuries were observed among basketball players.

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