Table 7.

Logistic regression analysis of recurrence risk factors

Variable	Estimate	SE	P Value	OR Value	Lower	Upper
Treatment regimen	-1.971	0.575	0.001	0.139	0.042	0.404
Age	-1.205	0.581	0.038	0.300	0.088	0.888
Neck trauma	-0.904	0.528	0.087	0.405	0.140	1.130
Pillow height	2.406	0.475	<0.001	11.084	4.762	31.151
Intercept	-1.641	1.82	0.367	0.194	0.005	6.244

Note: SE, Standard Error; OR, Odds Ratio.