Table 1.

Patient Demographics

Demographics	All Patients (n = 342)	+Hip/Knee OA (n = 157)	-Hip/Knee OA (n = 185)	P
Age	57.92 ± 14.56	65.26 ± 10.75	51.69 ± 14.50	<0.001
BMI	30.33 ± 6.34	31.19 ± 6.31	29.60 ± 6.29	0.021
Non-White race	43 (12.6)	16 (10.2)	27 (14.6)	0.227
Current smoker	34 (9.9)	14 (8.9)	20 (10.8)	0.688
Former smoker	115 (33.6)	62 (39.5)	53 (28.6)	0.046
Workers compensation	8 (2.3)	2 (1.3)	6 (3.2)	0.399
Chronic opioids	132 (38.6)	58 (36.9)	74 (40.0)	0.640
ASA 3+	129 (37.7)	81 (51.6)	48 (25.9)	<0.001
3+ level decompression	26 (7.6)	20 (12.7)	6 (3.2)	0.002

ASA = American Society of Anesthesiologists, BMI = body mass index, OA = osteoarthritis

P-values < 0.05 in bold.

Data are expressed as mean ± SD or n (%).