Table 3

Multivariate logistic regression model outputs and receiver operator characteristic curve data using prior HSI, age, BFlh fascicle length and eccentric knee flexor strength

	χ²	p Value	AUC	Sensitivity	1-specificity
Model 1
Whole model	16.54	<0.001*	0.743	0.7778	0.352
Prior HSI	4.24	0.039*
Fascicle length†	9.43	0.002*
Prior HSI × fascicle length†	0.08	0.776
Model 2
Whole model	23.48	<0.001*	0.777	0.8148	0.328
Age	3.66	0.055
Fascicle length†	10.49	0.001*
Age x fascicle length†	3.46	0.062
Model 3
Whole model	11.49	0.009*	0.687	0.8077	0.4857
Prior HSI	2.04	0.152
Eccentric strength†	6.33	0.011*
Prior HSI × eccentric strength†	0.03	0.872
Model 4
Whole model	11.86	0.007*	0.686	0.9615	0.5619
Age	2.74	0.097
Eccentric strength†	5.05	0.024*
Age × eccentric strength†	0.00	0.962
Model 5
Whole model	17.26	<0.001*	0.759	0.8846	0.3714
Eccentric strength†	4.29	0.038*
Fascicle length†	7.18	0.007*
Eccentric strength† × fascicle length†	0.08	0.783

*p<0.05.
†Determined as the average of both left and right limb.
AUC, area under the curve; BFlh, biceps femoris long head; HSI, hamstring strain injury.