Table 2.
Relative Risk (95% CI) of in-hospital mortality for critical patients admitted during the ECS period with respect to the pre-ECS period, according to patients' characteristics at admission.
| Patients, n [pre-ECS:ECS] | Day 0 |
Day 1–28 |
Day 0–28 |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Patients, n [pre-ECS:ECS] | RRa (IC 95%) | p-valueb | Patients, n [pre-ECS:ECS] | RRa (IC 95%) | p-valueb | Patients, n [pre-ECS:ECS] | RRa (IC 95%) | p-valueb | ||
| Age, years | ||||||||||
| 18–64 | 89:89 | 5:8 | 1.6 (0.52; 4.89) | 0.7 | 9:8 | 0.92 (0.36; 2.39) | 0.6 | 14:16 | 1.14 (0.56; 2.34) | 0.9 |
| ≥65 | 29:28 | 3:3 | 1.04 (0.21; 5.13) | 6:8 | 1.39 (0.48; 4) | 9:11 | 1.27 (0.52; 3.05) | |||
| AIS head | ||||||||||
| <4 | 83:85 | 2:2 | 0.98 (0.14; 6.93) | 0.6 | 6:8 | 1.3 (0.45; 3.75) | 0.8 | 8:10 | 1.22 (0.48; 3.09) | 1.0 |
| ≥4 | 35:32 | 6:9 | 1.64 (0.58; 4.61) | 9:8 | 1.12 (0.43; 2.9) | 15:17 | 1.24 (0.62; 2.48) | |||
| Inclusion criteria, n | ||||||||||
| 1 | 67:60 | 0:5 | NE | – | 8:7 | 0.95 (0.34; 2.61) | 0.7 | 8:12 | 1.5 (0.61; 3.67) | 0.5 |
| ≥2 | 51:50 | 8:6 | 0.77 (0.27; 2.2) | 7:9 | 1.26 (0.47; 3.37) | 15:15 | 1.02 (0.5; 2.09) | |||
AIS = anatomical injury score; BE = base excess; NE = not estimable (no events); RR = relative risk; SBP = systolic blood pressure.
a
Relative Risk of mortality for patients in the ECS study period vs. patients in the pre-ECS period (reference) with 95% CI, from Poisson regression model. A number lower than 1 indicates a reduction in the mortality risk for patients in the ECS with respect to the pre-ECS period.
b
p-value to test interaction between patients' characteristics and mortality RR (F-test).