Table 4.
Linear regression output for model 2.
| Coefficients | Estimate | Std. error | t value | Pr(>|t|) |
|---|---|---|---|---|
| (Intercept) | 4158.721 | 141.8098 | 29.326 | <2E-16 |
| Female | 117.3564 | 40.5694 | 2.893 | 0.003971 |
| ASA2 | −153.791 | 132.5281 | −1.16 | 0.246375 |
| ASA3 | −124.735 | 134.6469 | −0.926 | 0.354653 |
| ASA4 | −595.047 | 255.7155 | −2.327 | 0.020329 |
| Latino | 62.0693 | 119.505 | 0.519 | 0.603701 |
| Non-smoker | 144.742 | 41.2748 | 3.507 | 0.000491 |
| Current smoker | 15.9301 | 67.0141 | 0.238 | 0.812193 |
| MD1 | 904.0303 | 41.4324 | 21.819 | < 2e-16 |
| MD2 | 427.658 | 55.3713 | 7.723 | 5.42E-14 |
| THA | 402.8949 | 39.8771 | 10.103 | < 2E-16 |
| DRG469 | −290.308 | 184.299 | −1.575 | 0.115787 |
| Discharge HHC | 34.328 | 95.6204 | 0.359 | 0.719731 |
| Discharge SNF | 63.4352 | 89.6821 | 0.707 | 0.47966 |
| Discharge rehab | 135.4856 | 62.4496 | 2.17 | 0.030472 |
| Discharge other | −115.936 | 149.6541 | −0.775 | 0.438855 |
| CHF | 359.8052 | 172.7928 | 2.082 | 0.037779 |
| Arrhythmia | −125.196 | 59.8713 | −2.091 | 0.036981 |
| Valvular | −0.2156 | 111.9764 | −0.002 | 0.998464 |
| PHTN | −192.741 | 146.4764 | −1.316 | 0.188775 |
| PVD | −48.0579 | 136.0797 | −0.353 | 0.724104 |
| HTN | −45.1379 | 39.8851 | −1.132 | 0.258256 |
| NeuroOther | 23.9178 | 205.8308 | 0.116 | 0.907536 |
| Pulmonary | 116.6937 | 88.5686 | 1.318 | 0.188205 |
| DM | −277.396 | 270.7479 | −1.025 | 0.306025 |
| DMcx | 56.9401 | 95.7854 | 0.594 | 0.552453 |
| Hypothyroid | 23.7441 | 52.0502 | 0.456 | 0.648444 |
| Renal | 256.9237 | 124.0146 | 2.072 | 0.038759 |
| Liver | 198.2371 | 143.6675 | 1.38 | 0.168201 |
| PUD | −400.806 | 259.9973 | −1.542 | 0.123753 |
| HIV | −1045.34 | 397.1882 | −2.632 | 0.008731 |
| Lymphoma | −10.9103 | 141.3731 | −0.077 | 0.938513 |
| Mets | −658.525 | 487.1052 | −1.352 | 0.17696 |
| Tumour | −97.213 | 61.2185 | −1.588 | 0.11287 |
| Rheumatic | 275.9431 | 226.4781 | 1.218 | 0.223593 |
| Coagulopathy | 135.0668 | 220.205 | 0.613 | 0.539887 |
| Obesity | 52.159 | 69.4811 | 0.751 | 0.453159 |
| FluidsLytes | −190.382 | 95.4967 | −1.994 | 0.046691 |
| Anaemia | −41.3172 | 53.0057 | −0.779 | 0.436029 |
| Alcohol | 41.4608 | 201.2687 | 0.206 | 0.836869 |
| Drugs | 782.0746 | 229.0146 | 3.415 | 0.000685 |
| Psychoses | 219.4143 | 162.9683 | 1.346 | 0.178742 |
| Depression | −10.4286 | 55.1879 | −0.189 | 0.85019 |
| Charlson score | 8.7871 | 35.3314 | 0.249 | 0.803681 |
| Cluster 2 | −90.9712 | 56.7029 | −1.604 | 0.109213 |
| Cluster 3 | −162.919 | 64.3051 | −2.534 | 0.011569 |
| Cluster 4 | −8.9098 | 58.0107 | −0.154 | 0.877991 |
| Cluster 5 | −44.8049 | 55.447 | −0.808 | 0.419402 |
| Cluster 6 | 283.8611 | 118.716 | 2.391 | 0.017135 |
Notes: The bold values are the statistically significant factors (statistically significant determined with a p ≤ 0.05).