Table 11. Multi-Variable Inverse Gaussian Regression Model for Hospital Length of Stay.
* statistically significant (p≤0.05)
Exp(b): exponential function of parameter (b); CI: confidence interval; SES: socioeconomic status; 3x Poverty: three-times federal poverty level; Pre-Op: preoperative; FEV1%: forced expiratory volume in one second as percent of predicted; COPD: chronic obstructive pulmonary disease; CVA: cerebrovascular disease
| Variables | Exp(b) † | 95% CI† | p-value |
| Intercept | 2.49 | 1.40-4.44 | 0.002* |
| SES† Below 3x Poverty† | 1.16 | 0.94-1.43 | 0.174 |
| male Gender | 1.02 | 0.89-1.16 | 0.809 |
| Age | 1.01 | 1.01-1.02 | <0.001* |
| Pre-Operative FEV1%† | 1.00 | 0.99-1.00 | 0.047* |
| Current Smoker | 1.28 | 1.06-1.56 | 0.012* |
| Former Smoker | 1.02 | 0.88-1.18 | 0.804 |
| Pre-Operative Hypertension | 1.04 | 0.92-1.18 | 0.527 |
| Pre-operative Chemotherapy | 1.71 | 1.10-2.67 | 0.017* |
| Pre-operative COPD† | 1.26 | 1.06-1.49 | 0.010* |
| Pre-operative Pancreatitis | 1.24 | 0.67-2.31 | 0.490 |
| Pre-Operative CVA† | 1.15 | 0.80-1.63 | 0.453 |