Table 2.
Univariate and multivariate regression analysis of factors associated with inpatient mortality
| Variable | Unadjusted odds ratio | 95% CI | p value | Adjusted odds ratio | 95% CI | p value |
|---|---|---|---|---|---|---|
| Age | 1.031 | 1.021–1.042 | <0.01 | 1.03 | 1.02–1.05 | <0.01 |
| Female sex | 0.96 | 0.69–1.33 | 0.82 | 1.00 | 0.69–1.44 | 0.986 |
| Race | ||||||
| White | Reference | Reference | ||||
| African Americans | 0.8 | 0.43–0.49 | 0.49 | 0.8 | 0.43–0.49 | 0.49 |
| Hispanic | 0.68 | 0.33–1.4 | 0.306 | 0.68 | 0.33–1.4 | 0.306 |
| Others | 0.66 | 0.35–1.25 | 0.208 | 0.66 | 0.35–1.25 | 0.208 |
| Median income in patient zip code | ||||||
| USD 1–38,999 | Reference | Reference | ||||
| USD 39,000–47,999 | 0.84 | 0.54–1.31 | 0.452 | 0.61 | 0.34–1.09 | 0.096 |
| USD 48,000–62,999 | 0.92 | 0.58–1.46 | 0.73 | 0.76 | 0.42–1.38 | 0.348 |
| >USD 63,000 | 1.12 | 0.72–1.73 | 0.61 | 0.96 | 0.56–1.62 | 0.882 |
| Hospital bed size | ||||||
| <250 beds | Reference | Reference | ||||
| 250–400 beds | 1.53 | 0.75–3.13 | 0.235 | 1.13 | 0.87–1.46 | 0.349 |
| >400 beds | 0.58 | 0.24–1.41 | 0.236 | 0.71 | 0.38–1.06 | 0.104 |
| Teaching hospital | 1.15 | 0.81–1.62 | 0.422 | 0.125 | 0.78–1.9 | 0.339 |
| Insurance provider | ||||||
| Medicare | Reference | Reference | ||||
| Medicaid | 0.63 | 0.38–1.04 | 0.07 | 0.75 | 0.39–1.1 | 0.359 |
| Private | 0.51 | 0.35–0.76 | <0.01 | 0.71 | 0.43–1.03 | 0.109 |
| Uninsured | 0.82 | 0.43–1.57 | 0.569 | 0.84 | 0.51–1.17 | 0.365 |
| Charlson comorbidity index | 1.25 | 1.19–1.31 | <0.01 | 1.17 | 1.05–1.30 | <0.01 |
| Shock | 32.09 | 16.78–61.37 | <0.01 | 33.5 | 14.34–65.77 | <0.01 |
| Prolonged ventilation | 40.15 | 2.51–640.06 | <0.01 | 64.5 | 37.8–109.8 | <0.01 |