Table 4.
NORMIT coefficients for predicting survival and odds ratios of death
| Predictors* | Coefficients for predicting survival (95% CI) | Odds ratio of death (95% CI) |
|---|---|---|
| T-RTS – 11.1889 | 0.5422 (0.48 to 0.61) | 0.58 (0.54–0.62) |
| [(Age + 1)/100]3 − 0.0571 | −5.1288 (−5.98 to −4.28) | 169 (72.2–395) |
| ASA-PS | ||
| 1 | 0 | |
| 2 | −1.4366 (−2.09 to −0.78) | 4.21 (2.18–8.11) |
| 3 and 4 | −1.9210 (−2.56 to −1.28) | 6.83 (3.59–13.0) |
| (NISS − 19.9303) by ASA-PS | ||
| 1 | −0.1027 (−0.12 to −0.09) | 1.11 (1.09–1.12) |
| 2 | −0.0637 (−0.08 to −0.05) | 1.07 (1.05–1.08) |
| 3 and 4 | −0.0535 (−0.07 to −0.04) | 1.05 (1.04–1.07) |
| Constant | 5.8034 | |
*
For numerical variables, the statistical package Stata adjusts the variables by subtracting the sample mean before model coefficients are calculated.
T-RTS, Triage Revised Trauma Score (0–12); ASA-PS, pre-injury American Society of Anesthesiologists Physical Status Classification (1–4); NISS, New Injury Severity Score; CI, confidence interval.