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. Author manuscript; available in PMC: 2015 Mar 1.

Published in final edited form as: Spine J. 2014 Sep 28;15(3):435–442. doi: 10.1016/j.spinee.2014.09.015

Table 3.

Odds ratios and 95% CIs for patient and hospital characteristics in the multivariate analyses predictive of the likelihood of surgery

Characteristic		Surgery (ACDF, PCF, or PCD)
Characteristic		OR	CI	p
Age	0–49^*	-	-	-
	50–64	1.1	0.9–1.3	0.4
	65–79	1.2	0.9–1.6	0.6
	≥80	0.7	0.5–0.9	< 0.01

Region, hospital	NE^*	-	-	-
	MW	1.1	0.8–1.5	0.6
	S	1.3	1.1–1.7	< 0.01
	W	1.1	0.8–1.4	0.5

Bed size (%)	Small (1–249)^*	-	-	-
	Medium (250–449)	1.9	1.1–3.2	< 0.01
	Large (≥450)	1.9	1.2–3.2	< 0.01

Discharge Type (%)	Routine^*	-	-	-
Discharge Type (%)	Not Routine	1.3	1.1–1.5	< 0.01

Anemia Deficiency		0.8	0.6–1	< 0.05
Renal Failure		0.7	0.5–0.9	< 0.05

LOS	< 5 days^*	-	-	-
LOS	≥ 5 days	0.6	0.5–0.7	< 0.01

^*

Reference group for comparison