Table 2. Frequency distribution of various types of variables in drug and placebo groups .

Variable	Level	Group
		Placebo n (%)	Tranexamic acid n (%)
Gender	Female	4 (9.1%)	16 (28.5%)
	Male	40 (90.9%)	40 (71.4%)
Coma	Mild	28 (6.3.6%)	32 (57.2%)
	Moderate	6 (13.6%)	15 (26.7%)
	Severe	10 (22.7%)	9 (16.1%)
Cause of death	Head impact	3 (100.0%)	4 (100.0%)
	Extra cranial bleeding	0 (0.0%)	4 (100.0%)
Mortality rate	Patients	3 (6.8%)	8 (16.6%)
Survival rate	Patients	41 (93.2%)	48 (83.4%)