Table 20: Parameter Estimates for Length of Stay
| Variable | DF | Parameter Estimate | Standard Error | t Value | Pr > |t| | VIF |
| Intercept | 1 | 1.0099 | 0.0397 | 25.41 | < .0001 | 0 |
| Gender* | 1 | -0.0557 | 0.0119 | -4.70 | < .0001 | 1.0067 |
| S1S2S3 | 1 | 0.0099 | 0.0370 | 0.27 | 0.7884 | 9.7940 |
| S1S2* | 1 | -0.0832 | 0.0390 | -2.14 | 0.0329 | 7.9860 |
| S2S3* | 1 | 0.1178 | 0.0416 | 2.83 | 0.0047 | 3.5263 |
| S1S3 | 1 | 0.0239 | 0.0384 | 0.62 | 0.5333 | 7.2413 |
| S1 | 1 | 0.0411 | 0.0475 | 0.86 | 0.3872 | 2.2485 |
| S3 | 1 | 0.0412 | 0.0428 | 0.96 | 0.3350 | 3.0663 |
| A1A2* | 1 | 0.2028 | 0.0280 | 7.23 | < .0001 | 1.3417 |
| A1 | 1 | 0.0081 | 0.0175 | 0.46 | 0.6446 | 2.1691 |
| A2* | 1 | 0.1057 | 0.0200 | 5.28 | < .0001 | 2.2211 |
| A3* | 1 | 0.0373 | 0.0223 | 1.67 | 0.0941 | 1.9206 |
| TA* | 1 | -0.1116 | 0.0133 | -8.41 | < .0001 | 1.3339 |
| Age_Group* | 1 | 0.0898 | 0.0116 | 0.0116 | < .0001 | 1.0139 |