Exhibit 38. Results of logistic regression using the derivation dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -3.15016 | -1.31103 | 0.19127 |
Age | -0.02436 | -1.36677 | 0.17172 |
Chronic lung disease | 0.717234 | 1.299857 | 0.19365 |
Emergency surgery | 1.667783 | 2.711989 | 0.00669 |
No. of procedures | 0.647188 | 2.857793 | 0.00442 |
Postop admission | 1.502892 | 2.895868 | 0.00379 |
Postop hemoglobin | -0.26253 | -1.52152 | 0.12890 |
Preop hemoglobin | 0.013404 | 0.231 | 0.82005 |
Surgery duration | 0.007371 | 2.714224 | 0.00665 |
Postop = postoperative; Preop = preoperative.
Exhibit 39. Results of logistic regression using the validation dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -5.30978 | -2.3102 | 0.02089 |
Age | -0.01718 | -1.01601 | 0.30962 |
Chronic lung disease | 1.181684 | 2.524745 | 0.01158 |
Emergency surgery | 2.01501 | 3.420056 | 0.00063 |
No. of procedures | -0.58576 | -0.61154 | 0.54084 |
Postop admission | 1.962564 | 3.988843 | 0.00007 |
Postop hemoglobin | 0.079368 | 0.560087 | 0.72071 |
Preop hemoglobin | 0.019021 | 0.361141 | 0.44228 |
Surgery duration | 0.002467 | 1.890769 | 0.05866 |
Postop = postoperative; Preop = preoperative.
Exhibit 40. Results of logistic regression using the combined dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -4.28495 | -2.91129 | 0.00361 |
Age | -0.02085 | -1.74905 | 0.08028 |
Chronic lung disease | 0.930147 | 2.645746 | 0.00815 |
Emergency surgery | 1.730828 | 4.182002 | 0.00003 |
No. of procedures | 0.410227 | 1.931115 | 1.931115 |
Postop admission | 1.728514 | 4.971104 | 0.00000 |
Postop hemoglobin | -0.09155 | -0.89798 | 0.36925 |
Preop hemoglobin | 0.014634 | 0.464605 | 0.64256 |
Surgery duration | 0.003186 | 2.997669 | 0.00272 |
Postop = postoperative; Preop = preoperative.