Table 3. Comparison of the Initial, 48 Hours Later and the Final Levels of S100B Protein Between the Three Groups .

	All Patients, Mean ± SD	Improvement, Mean ± SD	Death, Mean ± SD	Brain Death, Mean ± SD	P value
S100 first	1.13 ± 0.6	0.99 ± 0.45	1.12 ± 0.36	1.01 ± 0.93	0.013
S100 after 48 hours	1.42 ± 0.81	1.04 ± 0.5	1.46 ± 0.51	2.36 ± 0.94	< 0.0005a
S100 last	1 ± 0.58	0.77 ± 0.4	1.08 ± 0.45	1.53 ± 0.73	< 0.0005a

^a P values were significant (P ≤ 0.05)