Table 2 –
Odds Ratios of Anterior-Posterior Fusion vs. All Other Fusion Procedures by Race/Ethnicity
| Anterior-Posterior Fusion1 (OR, 95% CI) |
|
|---|---|
| Model 1: Race alone | |
| White | Reference |
| Black | 0.81 (0.67–0.97) |
| Hispanic | 1.19 (0.92–1.52) |
| Other | 1.39 (0.97–2) |
| Model 2: Model 1 + age, sex, comorbidities2 | |
| White | Reference |
| Black | 0.76 (0.64–0.92) |
| Hispanic | 1.15 (0.89–1.48) |
| Other | 1.39 (0.97–1.99) |
| Model 3: Model 2 + hospital factors3 | |
| White | Reference |
| Black | 0.84 (0.69–1.02) |
| Hispanic | 0.96 (0.76–1.22) |
| Other | 1.15 (0.83–1.59) |
| Model 4: Model 3 + SES factors4 | |
| White | Reference |
| Black | 0.87 (0.71–1.06) |
| Hispanic | 0.99 (0.78–1.25) |
| Other | 1.13 (0.82–1.55) |
1
Odds ratios were calculated for the anterior-posterior fusion procedure vs. all other fusion methods. Anterior-posterior fusion indicates a combined PLF + ALIF procedure.
2
Model 2 adjusted for comorbidities using the Elixhauser comorbidity index.
3
The hospital factors included in regression model 3 were hospital bedsize, location/teaching status, U.S. division, and fusion procedure volume.
4
The socioeconomic factors included in regression model 4 were payer/insurance and median household income for the patient’s zip code. White was used as the reference race category.