Factors that impact on time to death following CC from a Gamma prediction model
| Parameter | Regression estimate* | SE | 95% Confidence limits | χ2 | p Value | |
|---|---|---|---|---|---|---|
| Intercept | 10.006 | 1.752 | 6.572 | 13.440 | 32.61 | <0.0001 |
| Age at index admission (+1 year) | −0.037 | 0.022 | −0.080 | 0.006 | 2.83 | 0.093 |
| T2 DM (yes/no) | 1.095 | 1.001 | −0.867 | 3.058 | 1.20 | 0.274 |
| Log (APACHE II) (+1 unit) | −0.345 | 0.200 | −0.736 | 0.046 | 2.99 | 0.084 |
| Coronary artery stent within 1 year (yes/no) | −3.015 | 0.628 | −4.245 | −1.785 | 23.08 | <0.0001 |
| Thyroid/parathyroid (yes/no) | −5.875 | 0.746 | −7.336 | −4.414 | 62.10 | <0.0001 |
| Number of CC stays in previous year (+1 CC stay) | −0.414 | 0.299 | −1.000 | 0.172 | 1.92 | 0.166 |
| Gamma scale parameter | 0.326 | 0.053 | 0.238 | 0.448 | ||
| Gamma shape parameter | 6.816 | 1.093 | 4.673 | 8.958 | ||
*Log of time to death ratio (negative represents a shorter time to death).
CC, critical care; DM, diabetes mellitus.