Table 4.
Multivariable logistic regression for predicting massive transfusion stratified by age and antihypertensives
| Aged > 65 years not taking antihypertensives | Aged > 65 years taking antihypertensives | Aged < 65 years not taking antihypertensives | Aged < 65 years taking antihypertensives | |||||
|---|---|---|---|---|---|---|---|---|
| P value | aOR (95% CI) | P value | aOR (95% CI) | P value | aOR (95% CI) | P value | aOR (95% CI) | |
| Male sex | 0.613 |
0.68 (0.16–2.99) |
0.593 |
2.51 (0.09–72.6) |
0.997 |
1.00 (0.29–3.38) |
0.108 |
0.14 (0.01–1.55) |
| Age, yr | 0.836 |
0.99 (0.88–1.11) |
0.271 |
1.13 (0.91–1.40) |
0.039 |
1.04* (1.00–1.07) |
0.909 |
0.99 (0.86–1.15) |
| Prehospital SBP | ||||||||
| < 90 mmHg | 0.959 |
1.02 (0.95–2.25) |
0.012 |
94.0* (4.16–795) |
0.237 |
2.12 (0.61–7.23) |
0.441 |
4.16 (0.11–36.6) |
| 90–110 mmHg | 0.290 |
2.37 (0.48–11.7) |
0.024 |
28.1* (1.75–52.0) |
0.447 |
1.58 (0.49–5.12) |
0.049 |
10.3* (1.01–44.7) |
| > 110 mmHg (reference) | – | 1.00 | – | 1.00 | – | 1.00 | – | 1.00 |
| SI > 1.0. ED initial | 0.002 |
10.3* (2.27–46.3) |
0.291 |
8.04 (0.17–83.8) |
0.044 |
3.87* (1.36–11.0) |
0.802 |
0.67 (0.03–15.1) |
| RTS | 0.015 |
0.49* (0.28–0.87) |
0.087 |
0.35 (0.11–1.16) |
0.001 |
0.59* (0.43–0.81) |
0.147 |
0.52 (0.22–1.26) |
| ISS | 0.655 |
1.02 (0.93–1.12) |
0.216 |
1.08 (0.96–1.22) |
< 0.001 |
1.10* (1.05–1.14) |
0.100 |
1.06 (0.99–1.13) |
Adjusted for sex, age, prehospital SBP, SI measured at ED admission, RTS, and ISS
aOR adjusted odds ratio, CI confidence interval, ED emergency department, ISS Injury Severity Score, RTS Revised Trauma Score, SBP systolic blood pressure, SI shock index
*P value < 0.05