Table 1.

Clinical and demographic characteristics between the two groups

Admission characteristic	Placebo (n = 77)	Progesterone (n = 82)	P value
Males	57 (74)	58 (70)	0.64
Females	20 (25)	24 (29)	0.64
Mean (standard deviation) age (years)	31 (9)	30 (11)	0.52
Mean (standard deviation) time injury to administration (hours)	3.65 (1.46)	3.80 (2.03)	0.59
Mean (standard deviation) qualifying Glasgow Coma Scale score	6.1 (1.3)	6.0 (1.8)	0.68
Glasgow Coma Scale 3 to 5	20 (25)	22 (26)	0.90
Mechanism of injury
Motor vehicle	62 (80)	63 (76)	0.57
Fall	8 (10)	10 (12)	0.71
Assault	4 (5)	7 (8)	0.40
Other	3 (3)	2 (2)	0.59
Surgical procedures	24 (31)	22 (26)	0.54
Pupillary response
Bilaterally normal	26 (33)	26 (31)	0.78
Abnormal	51 (66)	56 (68)	0.78
Marshall computerized tomography scan classification
I	0	0
II	9 (11)	7 (8)	0.50
III	22 (28)	28 (34)	0.44
IV	13 (16)	12 (14)	0.69
V	24 (31)	22 (26)	0.54
VI	9 (11)	13 (15)	0.44

Data presented as n (%) unless indicated otherwise.