Table I.

Patient data regarding patient numbers, mean serum τ protein levels and statistical P-values.

	Mean serum τ protein levels in TBI groups, (pg/ml)
after TBI	Mild (n=20)	Moderate (n=19)	Severe (patients)	P-value
12 h	21.52±3.82	23.79±7.15	31.04±16.89 (n=17)	<0.0500
1 day	27.44±4.12	49.97±9.77	135.67±28.91 (n=17)	<0.0001
2 days	39.14±3.78	85.58±12.72	351.02±73.80 (n=17)	<0.0001
3 days	33.46±3.90	73.56±11.57	248.12±52.67 (n=16)	<0.0001
4 days	31.55±4.89	65.66±10.45	201.19±46.46 (n=16)	<0.0001
7 days	29.54±3.15	39.22±9.28	63.96±14.45 (n=14)	<0.0001
14 days	28.35±2.69	37.44±8.45	93.59±29.98 (n=14)	<0.0001

Data presented as the mean ± standard deviation. TBI, traumatic brain injury.