Table 2.
Mean hospital lengths of stay (full cohort)
| No. days | Initial procedure | Follow-up^ | ||||
|---|---|---|---|---|---|---|
| Group | P value | Group | P value | |||
| V-CBA (n = 6588) | rhBMP-2 (n = 9584) | V-CBA (n = 1482) | rhBMP-2 (n = 2021) | |||
| Unadjusted† (SD) | 3.91 (4.48) | 3.67 (3.30) | 0.0948 | 7.97 (12.38) | 7.10 (8.52) | 0.0694 |
| Adjusted‡ (95% CI) | 3.77 (3.66, 3.89) | 3.88 (3.77, 3.99) | < 0.0001* | 7.87 (7.21, 8.53) | 7.46 (7.04, 7.89) | < 0.0001* |
^Did not include patients who may have received follow-up treatment outside of the Premier Healthcare System
†Wilcoxon rank-sum test
‡Multivariate regression models were adjusted with the following confounds as covariates: race, ethnicity, Charlson comorbidity index, health insurance status, initial admission type, initial admission source, initial discharge status, cage insertion, multiple levels treated, hospital size, hospital teaching status, hospital population served, and hospital region
*Statistically significant