Table 3.

Estimates of the coefficients in the optimal model and results of dropping each explanatory variable separately (AIC and adjusted R-squared) from the explanatory variables in the optimal model for critical shoulder angle (p-value is not a criterion according to which the optimal model was chosen)

	Estimate of the coefficients	95% confidence interval lower bound	95% confidence interval upper bound	p value	Model AIC on removing variable	Model Adjusted R2 on removing variable
Glenoid inclination	0.625	0.384	0.866	< 0.001	139.9	0.467
Glenoid version	-0.177	-0.347	-0.008	0.041	118.6	0.641
Anterior Acromial Box Length Wt	-29.758	-57.372	-2.144	0.035	118.9	0.641
Posterior Acromial Box Length Wt	63.756	21.682	105.829	0.004	123.9	0.606
Sagittal plane angulation of the acromion	0.186	0.043	0.330	0.012	121.3	0.625
Coronal plane angulation of the acromion	-0.202	-0.263	-0.140	< 0.001	151.3	0.339
Sagittal plane scapular spine angulation	0.230	0.099	0.362	0.001	127.0	0.582
Spinoglenoid distance x plane wt	-58.680	-106.351	-11.010	0.017	120.5	0.630
Spinoglenoid distance y plane wt	-40.408	-93.252	12.435	0.130	116.2	0.659
Spinoglenoid distance—z plane Wt	-63.583	-115.214	-11.951	0.017	120.5	0.630