Table 4.

Comparison of serum tau protein and S100B levels in different AFC groups (mean ± SD)

Group	n	Tau (pg/ml)	S100B (ng/L )
Control group	35	106.4 ± 19.0	145.2 ± 29.0
NAF-HIE	20	725.1 ± 247.9	385.7 ± 167.2 a
I°AFC-HIE	13	725.1 ± 133.1a	411.7 ± 125 0.8 a
II°AFC-HIE	10	849.4 ± 166.1a	460.1 ± 110.0 a
III°AFC-HIE	32	956.5 ± 175.0abc	587.3 ± 146.2abcd
F value		32.700	7.140
P value		< 0.001	< 0.001

Note: ^a Compared with control group, p < 0.05; ^b Compared with NAF-HIE, p < 0.05

^c Compared with I°AFC-HIE, p < 0.05; ^d Compared with II°AFC-HIE, p < 0.05

AF, amniotic fluid; AFC, amniotic fluid contamination; HIE, hypoxic–ischemic encephalopathy