Table 3.
Multivariable model predicting the odds of postoperative complications
| Variables | OR (95% CI) | p value |
|---|---|---|
| Surgery type | ||
| Open surgery | Reference | |
| MIS | 0.70 (0.51, 0.96) | 0.03 |
| Age | 1.05 (1.02, 1.08) | <0.01 |
| Gender | ||
| Male | Reference | |
| Female | 1.43 (1.07, 1.90) | 0.01 |
| Race | ||
| Other | Reference | |
| Caucasian | 0.66 (0.48, 0.93) | 0.02 |
| CCS | 1.79 (1.48, 2.15) | <0.01 |
| Bed size | ||
| Large bed | Reference | |
| Small bed | 1.02 (0.57, 1.85) | 0.94 |
| Medium bed | 0.57 (0.39, 0.84) | <0.01 |
| Hospital location and type | ||
| Urban teaching | Reference | |
| Rural | 0.72 (0.12, 4.42) | 0.72 |
| Urban nonteaching | 0.30 (0.09, 1.06) | 0.06 |
| Hospital region | ||
| West | Reference | |
| Northeast | 0.72 (0.42, 1.23) | 0.23 |
| Midwest | 0.76 (0.47, 1.22) | 0.26 |
| South | 0.71 (0.47, 1.09) | 0.12 |
| Treatment year | ||
| 1998–2001 | Reference | |
| 2002–2005 | 1.17 (0.25, 5.53) | 0.84 |
| 2006–2009 | 1.18 (0.25, 5.46) | 0.83 |
| 2010–2012 | 1.19 (0.27, 5.29) | 0.82 |
a
Correlation of hospitals and year of admission used.