Plasma Levels of Vitamin A in Early Pregnancy and Correlationship with Hypertensive Disorder

Table 2

Comparison of vitamin A concentration between the case group and the control group.

Group	Number of cases	Vitamin A
Case group	266	0.47 (±0.099)
Control group	2836	0.44 (±0.091)
Value		-4.505
value		<0.001