Table 1.

Demographics of patients with and without metabolic syndrome (MetS) undergoing primary posterior lumbar spine fusion from 2000 to 2008.

Demographics
Group	No MetS	MetS	P-value
N=	225347	12949
Weighted N=	1089802	62945
(%)	94.5	5.5
Average age (years)	54.10 (54.04,54.17)	62.82 (62.63,63.01)	<.0001
Average Comorbidity Index	0.37 (0.37,0.38)	1.88 (1.86,1.90)	<.0001
Age group (%)
0–44	28.2	5.7	<.0001
45–64	43.7	47.3
65–74	17.7	32.4
>75	10.3	14.6
Gender(%)
Male	44.3	41.1	<.0001
Female	55.7	58.9
Race(%)
White	88.7	85.1	<.0001
Black	4.4	7.7
Hispanic	4.2	4.3
Other	2.6	2.9
Admission Type (%)
Emergent	3.3	2.6	<.0001
Elective	90.4	91.8
Urgent+Other	6.3	5.6
Hospital Size (%)
Small	12.5	12.2	0.4
Medium	21.7	22.2
Large	65.7	65.6
Hospital Location (%)
Rural	4.6	4.6	0.9
Urban	95.4	95.4
Hospital Teaching Status (%)
Non-teaching	46.7	46.7	1.0
Teaching	53.3	53.3
Spine Pathology(%)
Degenerative Disc Disease	45.9	37.7	<0.0001
Spinal stenosis	10.0	15.0
Scoliosis	1.4	0.3
Spondylolisthesis	5.4	5.4
Trauma	1.6	0.4
Oncologic	0.3	0.1
Other	4.7	3.3
Multiple Indications	30.7	37.7