Table 2.

Comparison of the distribution of menaquinone-4 levels between the two groups.

	ASD group	TD group	X 2	P
<0.1 ng/ml	443	159	15.209	0.000*
0.1–0.86 ng/ml	280	167
>0.86 ng/ml	8	6

^*P < 0.05.