Table 3. The Effect of Progesterone on the Serum Level of Neuron-Specific Enolase (ng/ mL) in Diffuse Axonal Injury Patients.

Times	Control (n = 16) mean ± SEM, ng/ml	Progesterone (n = 16) mean ± SEM, ng/ml
Admission time	15.41 ± 0.85	14.42 ± 0.88
24 hours after injury	14.83 ± 0.87	14.09 ± 0.99
6 days after injury	2.14 ± 0.21a,b	5.63 ± 1.67a,b

^aP < 0.01 vs. admission in the control or progesterone group.

^bP < 0.01 vs. 24 hours after injury in the control or progesterone group.