Table 1.

Results of Cross-Tabulation Analysis of Dichotomized Variables

Variable	Odds Ratio (90% Confidence Interval)	Pa	Sensitivity	Specificity
Starter status ≥1 game	4.03 (2.58, 6.29)	<.001	0.61	0.72
Games played ≥4	2.78 (1.76, 4.38)	<.001	0.74	0.50
Oswestry Disability Index ≥4	2.32 (1.47, 3.67)	.002	0.41	0.77
Trunk-flexion hold ≤161 (2009), 96 (2010), 68 (2011) s	2.27 (1.47, 3.49)	.001	0.65	0.55
Estimated mass moment of inertia ≥450 kg · m2	2.08 (1.13, 3.84)	.04	0.18	0.90
Wall-sit hold ≤88 (2009), 41 (2010), 30 (2011) s	1.94 (1.27, 2.97)	.007	0.58	0.58
Body mass index ≥30.5	1.88 (1.21, 2.90)	.01	0.45	0.70

^aFisher exact test 1-sided P value.