Table 7.
Logistic Multivariate Regression Analysis on Non-Routine Discharge.a
| Univariate model | Multivariate model | P value | |
|---|---|---|---|
| Age | |||
| 50-64 | Reference | ||
| 65-79 | 1.69 (1.39, 2.04) | 1.36 (1.04, 1.78) | 0.027 |
| 80+ | 3.13 (2.03, 4.84) | 2.46 (1.44, 4.21) | 0.001 |
| Female sex | 1.06 (0.88, 1.29) | 1.05 (0.85, 1.31) | 0.624 |
| Race | |||
| White | Reference | ||
| Black | 2.06 (1.60, 2.65) | 2.14 (1.60, 2.86) | <0.001 |
| Hispanic | 1.53 (1.03, 2.27) | 1.55 (0.98, 2.44) | 0.061 |
| Other | 0.97 (0.61, 1.56) | 1.11 (0.69, 1.79) | 0.669 |
| Income Quartile | |||
| 0-25th | Reference | ||
| 26-50th | 0.77 (0.60, 0.99) | Removed | |
| 51-75th | 0.94 (0.73, 1.21) | Removed | |
| 76-100th | 0.93 (0.70, 1.23) | Removed | |
| Healthcare Coverage | |||
| Medicare | Reference | ||
| Medicaid | 0.95 (0.68, 1.33) | 1.13 (0.73, 1.75) | 0.588 |
| Private Insurance | 0.46 (0.36, 0.58) | 0.69 (0.52, 0.93) | 0.014 |
| Other | 0.42 (0.27, 0.67) | 0.50 (0.30, 0.83) | 0.008 |
| Hospital Bed Size | |||
| Small | Reference | ||
| Medium | 1.64 (1.18, 2.28) | 1.63 (1.15, 2.32) | 0.006 |
| Large | 1.41 (1.07, 1.87) | 1.32 (0.99, 1.78) | 0.063 |
| Hospital Region | |||
| Northeast | Reference | ||
| Midwest | 0.51 (0.36, 0.73) | 0.42 (0.28, 0.62) | <0.001 |
| South | 0.59 (0.43, 0.80) | 0.53 (0.38, 0.75) | <0.001 |
| West | 0.53 (0.38, 0.74) | 0.51 (0.35, 0.74) | <0.001 |
| Comorbidity | |||
| Affective disorder | 1.29 (1.05, 1.58) | Removed | |
| Congestive heart failure | 3.03 (1.97, 4.67) | 1.83 (1.12, 3.00) | 0.017 |
| Cardiac arrhythmias | 3.29 (2.45, 4.41) | 2.39 (1.70, 3.35) | <0.001 |
| Hypertension, combined | 1.88 (1.53, 2.32) | 1.41 (1.11, 1.78) | 0.004 |
| Paralysis | 4.82 (2.49, 9.31) | 3.93 (2.00, 7.70) | <0.001 |
| Other neurological disorders | 3.59 (2.38, 5.43) | 2.97 (1.86, 4.73) | <0.001 |
| Chronic pulmonary disease | 1.57 (1.26, 1.95) | 1.49 (1.16, 1.91) | 0.002 |
| Diabetes, uncomplicated | 1.45 (1.17, 1.79) | Removed | |
| Hypothyroidism | 1.49 (1.18, 1.88) | 1.32 (1.01, 1.73) | 0.046 |
| Renal failure | 2.54 (1.84, 3.51) | Removed | |
| Coagulopathy | 6.00 (2.64, 13.60) | 3.78 (1.52, 9.35) | 0.004 |
| Obesity | 1.56 (1.22, 1.99) | 1.32 (1.00, 1.76) | 0.053 |
| Fluid and electrolyte disorders |
4.35 (3.05, 6.21) | 2.82 (1.85, 4.30) | <0.001 |
| Fusion Levels | |||
| One level | Reference | ||
| Two levels or more | 0.99 (0.79, 1.23) | 1.06 (0.83, 1.36) | 0.637 |
| Number of Complications | |||
| 0 | Reference | ||
| 1 | 3.16 (2.47, 4.05) | 2.66 (2.02, 3.51) | <0.001 |
| >1 | 3.66 (1.55, 8.64) | 2.32 (0.91, 5.92) | 0.077 |
aBold indicates statistical significance was met on the univariate and multivariate analyses respectively.