Table 3. The estimated mortality rates in trauma patients.
| Variables | No. of subsets | Fixed effect (95% CI) | Heterogeneity test (P value) | Random effect (95% CI) | Egger's test (P value) | ||
|---|---|---|---|---|---|---|---|
| At 24 hr | |||||||
| MT | 11 | 0.236 (0.217–0.257) | < 0.001 | 0.194 (0.194–0.249) | 0.028 | ||
| Without MT | 6 | 0.077 (0.064–0.091) | < 0.001 | 0.060 (0.029–0.118) | 0.511 | ||
| CAT | 2 | 0.158 (0.132–0.188) | 0.009 | 0.126 (0.060–0.246) | - | ||
| Without CAT | 2 | 0.039 (0.022–0.067) | < 0.001 | 0.015 (0.001–0.270) | - | ||
| RI ≥ 4 units | 2 | 0.170 (0.147–0.196) | 0.075 | 0.168 (0.129–0.216) | - | ||
| RI < 4 units | 2 | 0.097 (0.079–0.117) | 0.001 | 0.105 (0.052–0.201) | - | ||
| At 30 day | |||||||
| MT | 8 | 0.386 (0.357–0.416) | < 0.001 | 0.325 (0.260–0.397) | 0.007 | ||
| Without MT | 3 | 0.131 (0.111–0.153) | < 0.001 | 0.079 (0.015–0.327) | 0.650 | ||
| CAT | 1 | 0.062 (0.033–0.115) | 1.000 | 0.062 (0.033–0.115) | - | ||
| Without CAT | 1 | 0.007 (0.003–0.016) | 1.000 | 0.007 (0.003–0.016) | - | ||
| Overall | |||||||
| MT | 16 | 0.280 (0.272–0.289) | < 0.001 | 0.346 (0.258–0.446) | 0.141 | ||
| Without MT | 5 | 0.129 (0.109–0.152) | < 0.001 | 0.092 (0.041–0.191) | 0.428 | ||
| CAT | 2 | 0.223 (0.166–0.293) | 0.858 | 0.223 (0.166–0.293) | - | ||
| Without CAT | 2 | 0.047 (0.034–0.065) | 0.420 | 0.047 (0.034–0.065) | - | ||
CI = confidence interval, MT = massive transfusion (≥ 10 pRBC/24 hours), CAT = critical administration threshold (≥ 3 pRBC/1 hour), RI = resuscitation intensity.