TABLE 1.

Descriptive statistics in patients with and without available blood samples according to the treatment group (placebo or TXA)^a

	Placebo					TXA
	No sample		Blood sample			No sample		Blood sample
Variable	n	Median [IQR] or %	n	Median [IQR] or %	P	n	Median [IQR] or %	n	Median [IQR] or %	P
Age	39	43 [27–60]	129	35 [25–54]	.27	38	58 [24–69]	156	41 [27–56]	.04
Male gender	27	69%	107	83%	.07	27	71%	117	75%	.68
ISS	39	29 [20–34]	129	21 [17–30]	.01	37	26 [20–31]	155	25 [17–31]	.72
Head AIS	39	4 [3–5]	129	4 [3–5]	.13	38	4 [3–5]	156	4 [3–5]	.72
Penetrating injury	6	15%	8	6%	.09	…	…	…	…	…

Abbreviations: AIS, Abbreviated Injury Score; IQR, interquartile range; ISS, Injury Severity Score; TXA, tranexamic acid.

^aNo comparison was made for penetrating injury in the TXA group due to a lack of patients in the no-sample population.