Table 2.
Separate Logistic Regression Models Predicting the Odds of Prolonged Length of Stay (LOS >6 days), Readmission, and 30‐Day Mortality. LOS prediction does not include patients who died in the hospital; readmission prediction does not include patients who died in the hospital or never left the hospital. To predict outcomes for individual patients, the baseline odds are multiplied by odds ratios corresponding to factors known at the time of operation
| Long LOS | Readmission | Death | |
|---|---|---|---|
| Number of subjects at risk | 206,446 | 205,436 | 206,937 |
| Baseline odds (constant) | .0137 | .0203 | .0000558 |
| Odds ratios | |||
| Age 40–64 vs. <40 | 1.12a | 0.90a | 2.21a |
| Age 65–79 vs. <40 | 1.25a | 0.87a | 4.77a |
| Age 80–99 vs. <40 | 1.38a | 0.96 | 9.51a |
| Male vs. female | 1.14a | 0.92a | 1.34a |
| ASA 2 vs. 1 | 2.85a | 1.94a | 2.86 |
| ASA 3 vs. 1 | 5.81a | 3.18a | 9.65a |
| ASA 4–5 vs. 1 | 9.15a | 4.24a | 32.17a |
| Obese | 0.90a | 1.04 | 1.00 |
| Smoker or COPD | 1.17a | 1.11a | 1.48a |
| Other abnormal symptoms | 1.78a | 1.44a | 2.06a |
| Abnormal laboratory values | 1.60a | 1.35a | 2.49a |
| Pancreatectomy | 35.79a | 2.94a | 3.09a |
| Colectomy | 6.89a | 1.87a | 2.02a |
| Proctectomy | 14.07a | 3.48a | 2.13a |
| Ventral herniorraphy | 0.71a | 0.86a | 0.78 |
| Bariatric surgery | 0.28a | 0.87a | 0.52a |
| Hepatectomy | 8.57a | 1.69a | 2.76a |
| Thyroidectomy | 0.13a | 0.66a | 0.13a |
| Esophagectomy | 212.68a | 2.18a | 2.14 |
a
p < .01.