Exhibit 62. Results of logistic regression using the derivation dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -3.76 | -1.01 | 0.3183 |
Age | -0.02 | -1.11 | 0.2674 |
Chronic lung disease | 1.85 | 2.33 | 0.0197 |
Charlson score* | -0.47 | -1.07 | 0.2827 |
Emergency surgery | 1.75 | 2.38 | 0.0172 |
General anesthesia | 1.22 | 1.46 | 0.1447 |
Male | 1.11 | 1.85 | 0.0645 |
Postop admission | 3.55 | 3.36 | 0.0008 |
Preop glucose* | -0.01 | -0.46 | 0.6616 |
Preop hematocrit | -0.03 | -0.28 | 0.7829 |
Preop hemoglobin | -0.25 | -0.68 | 0.4966 |
Surgery duration | 0.01 | 1.91 | 0.0571 |
Wound class | 0.54 | 1.38 | 0.1681 |
*Additional Intermountain risk factor.
Exhibit 63. Results of logistic regression using the validation dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -3.87 | -1.34 | 0.1815 |
Age | -0.01 | -0.62 | 0.5327 |
Chronic lung disease | 0.44 | 0.67 | 0.4999 |
Charlson score* | 0.08 | 0.33 | 0.7412 |
Emergency surgery | 0.95 | 1.18 | 0.2372 |
General anesthesia | 1.12 | 1.44 | 0.1489 |
Male | -0.78 | -1.33 | 0.1842 |
Postop admission | 1.37 | 2.63 | 0.0086 |
Preop glucose* | -0.01 | -1.22 | 0.2331 |
Preop hematocrit | -0.06 | -0.66 | 0.5089 |
Preop hemoglobin | 0.13 | 0.46 | 0.6480 |
Surgery duration | 0.01 | 1.75 | 0.0801 |
Wound class | 0.26 | 0.49 | 0.6263 |
*Additional Intermountain risk factor.
Exhibit 64. Results of logistic regression using the combined dataset for only total hip surgery
Variable | Estimate | tValue | Probability |
---|---|---|---|
Intercept | -3.87 | -1.68 | 0.1005 |
Age | -0.02 | -1.23 | 0.2195 |
Chronic lung disease | 1.07 | 2.32 | 0.0205 |
Charlson score* | -0.14 | -0.63 | 0.5271 |
Emergency surgery | 1.31 | 2.60 | 0.0094 |
General anesthesia | 1.03 | 1.87 | 0.0618 |
Male | 0.11 | 0.28 | 0.7768 |
Postop admission | 2.04 | 4.70 | 0.0000 |
Preop glucose* | -0.01 | -0.96 | 0.3454 |
Preop hematocrit | -0.05 | -0.78 | 0.4367 |
Preop hemoglobin | -0.01 | -0.03 | 0.9787 |
Surgery duration | 0.01 | 2.94 | 0.0033 |
Wound class | 0.34 | 1.13 | 0.2605 |
*Additional Intermountain risk factor.