3.2 Genetic analysis
The genotype distribution of the site conformed to genetic balance and
had a better population representation through Hardy-Weinberg
equilibrium test. As Table 2 showed,the
locus allele of BDNF Val66Met was
significantly different between the case group and the control group,
and the difference was statistically
significant(χ2=4.657,
P=0.031, OR=0.884,
95%CI=0.791-0.989), suggesting that allele G may play a protective role
in the occurrence of PE. However, the genotype distribution is no
significant difference(χ2=4.555, P=0.103) between two
groups. There was no significant difference between the two groups in
additive gene analysis (χ2 = 2.682, P = 0.102, OR =
0.856, 95% CI = 0.710-1.031).