TABLE 2.

Multivariate Logistic Regression Models^a

	Model 1: Growth-Related Variables			Model 2: Growth and Shoulder Performance Variables			Model 3: Growth, Shoulder Performance, and Exposure Variables
Variable	OR	P	95% CI	OR	P	95% CI	OR	P	95% CI
Age	0.45	.022b	0.22-0.89	0.60	.208	0.27-1.33	0.60	.219	0.27-4.35
Height	1.55	.004b	1.15-2.08	1.79	.005b	1.19-2.69	1.77	.007b	1.17-2.66
Weight	0.99	.951	0.96-1.04	0.99	.723	0.96-1.03	0.99	.878	0.96-1.03
Difference in shoulder IR				0.89	.053	0.79-1.00	0.90	.098	0.79-1.02
Average maximum pitch velocity				0.90	.220	0.75-1.07	0.89	.190	0.75-1.06
Nondominant humerus torsion				0.99	.915	0.93-1.07	1.00	.952	0.94-1.07
Months per year baseball played							1.23	.287	0.84-1.79
Pseudo R 2	0.2605			0.3265			0.3419

^aIR, internal rotation; OR, odds ratio.

^bStatistically significant, P < .05.