Table 5.

Independent Risk Factors for 30-Day Wound Complications Following ASD Surgery.^a

Effect	OR	95% CI	P
Total RVU	1.01	1.00-1.01	.017
Approach (reference = Anterior)
Combined	1.7	0.7-4.2	.233
Posterior	1.8	1.2-2.9	.010
Obesity class (reference = Nonobese)
Obese I	1.4	0.9-2.2	.094
Obese II	1.7	1.0-2.8	.046
Obese III	2.8	1.7-4.7	<.0001
Blood transfusion (preoperative)	6.1	1.3-28.7	.021
ASA ≥3	1.7	1.1-2.4	.009
Operative time >4	1.8	1.2-2.7	.006

Abbreviations: ASD, adult spinal deformity; OR, odds ratio; CI, confidence interval; RVU, relative value unit; ASA, American Society of Anesthesiologists.

^aBoldface indicates P = .05.