Table 2 .
Odds ratio for receiving surgery in patients with a primary degenerative condition of the lumbar spine - multivariable Poisson regression, NIS data, 2010 to 2014*.
|
Demographic |
Odds ratio |
95% confidence interval |
P |
|
|---|---|---|---|---|
|
Gender | ||||
|
Male |
Reference |
|||
|
Female |
0.79 |
0.77, 0.81 |
P < .001 |
|
|
Race | ||||
|
White |
Reference |
|||
|
Black |
0.51 |
0.49, 0.53 |
P<.001 |
|
|
Hispanic |
0.53 |
0.50, 0.55 |
P<.001 |
|
|
Asian/Pacific Islander |
0.77 |
0.69, 0.85 |
P < .001 |
|
|
Other |
0.88 |
0.82, 0.95 |
P = .001 |
|
|
Primary insurance | ||||
|
Private |
Reference |
|||
|
Medicare |
0.75 |
0.72, 0.77 |
P < .001 |
|
|
Medicaid |
0.37 |
0.35, 0.38 |
P < .001 |
|
|
Hospital teaching status | ||||
|
Rural |
Reference |
|||
|
Urban, non-teaching |
1.76 |
1.68, 1.85 |
P < .001 |
|
|
Urban, teaching |
2.45 |
2.34, 2.57 |
P<.001 |
|
|
Geographic region | ||||
|
Northeast |
Reference |
|||
|
Midwest |
1.21 |
1.17, 1.25 |
P<.001 |
|
|
South |
1.77 |
1.71, 1.83 |
P<.001 |
|
|
West |
1.75 |
1.68, 1.81 |
P < .001 |
|
|
Year | ||||
|
2010 |
Reference |
|||
|
2011 |
1.05 |
1.01, 1.08 |
P = .013 |
|
|
2012 |
1.07 |
1.03, 1.10 |
P<.001 |
|
|
2013 |
1.15 |
1.10, 1.19 |
P<.001 |
|
|
2014 |
1.04 |
0.98, 1.08 |
P = .07 |
|
|
Spinal deformity | ||||
|
None |
Reference |
|||
|
Scoliosis, kyphosis, lordosis |
1.92 |
1.80, 2.04 |
P<.001 |
|
|
NIS = National Inpatient Sample. | ||||
*Also adjusted for age, Charlson comorbidity status, and median household income.