Table 3.

HIV Infected and Uninfected Patients at Surgery

		HIV Infected (n=228)	Uninfected (n=784)	P value
Procedure*	Decompression	134 (59%)	377 (48%)	0.060
	Fusion	32 (14%)	122 (16%)
	Decompression and Fusion	60 (26%)	277 (35%)
	Motion preservation	2 (0.88%)	8 (1.0%)
Location*	Cervical	87 (38%)	320 (41%)	<0.001
	Thoracic	3 (1.3%)	7 (0.90%)
	Lumbosacral	104 (46%)	404 (52%)
	Combined	7 (3.1%)	23 (2.9%)
	Unspecified	27 (12%)	30 (3.8%)
Spine Diagnoses**	722.10 Lumbar disc displacement	56 (25%)	169 (23%)	0.366
	724.02 Lumbar spinal stenosis	34 (15%)	138 (18%)	0.369
	721.1 Cervical spondylosis with myelopathy	29 (13%)	93 (12%)	0.729
	722.71 Cervical disc displacement without myelopathy	19 (8.3%)	6 (8.4%)	1.000
	722.0 Cervical disc displacement	17 (7.5%)	69 (8.8%)	0.890
	723.0 Cervical spinal stenosis	11 (5.3%)	77 (9.8%)	0.016
	721.0 Cervical spondylosis	7 (3.1%)	38 (4.8%)	0.360
	721.3 Lumbosacral spondylosis	7 (3.1%)	34 (4.3%)	0.451
cART		155 (68%)	n/a	n/a
BMI, kg/m2	<18.5	7 (3.0%)	14 (1.8%)	<0.001
	18.5 – 24.9	104 (45%)	200 (26%)
	25 – 29.9	85 (37%)	303 (39%)
	>30	32 (14%)	267 (34%)
Hemoglobin, g/dl	>12	196 (86%)	743 (95%)	<0.001
	10 – 12	24 (11%)	37 (4.7%)
	<10	8 (3.6%)	5 (0.59%)
Albumin, g/dl	≥3.5	178 (78%)	721 (92%)	<0.001
	<3.5	50 (22%)	63 (8.1%)
CD4 cell count, cells/mm3	≥ 500	86 (38%)	n/a	n/a
	350 – 499	47 (21%)	n/a
	200 – 349	39 (17%)	n/a
	50 – 199	28 (12%)	n/a
	<50	29 (13%)	n/a
Viral load, copies/ml	<500	120 (53%)	n/a	n/a
	≥ 500	108 (47%)	n/a

^*Based on ICD9 procedure and diagnosis codes from surgical admission

^**ICD9 diagnosis codes from surgical admission

cART = Combination anti-retroviral therapy

BMI = Body mass index