Table 4.

Estimated relative risks for trauma-induced thrombotic microangiopathy-like syndrome.

Covariates	P-value	Relative risk	95% CI
AIS (chest) =3	.001	4.23	1.637–10.917
AIS (abdomen) =3	.038	2.77	1.024–7.494
AIS (pelvis) =3	.002	3.91	1.532–9.976
[Table_Body]AIS (head =3, others	.019	0.13	0.018–0.981
Age =65 years	.004	3.70	1.433–9.564
Transfused RBC within 24 h =5 units		22.34	7.545–65.939
LDH on day 2 =500 U/L		5.97	2.192–16.255

AIS = abbreviated injury scale, CI = confidence interval, LDH = lactate dehydrogenase.