Table 1.

Comparison of general clinical information

Factors	HDP group (n=54)	Normal group (n=42)	χ2/t	P
Age (years old)	27.84 ± 4.67	28.44 ± 4.74	-0.620	0.536
Gestation period (W)	38.92 ± 1.13	39.21 ± 1.22	-1.205	0.231
Frequency of pregnancies	2.62 ± 0.43	2.51 ± 0.32	1.386	0.169
Frequency of births	1.32 ± 0.23	1.39 ± 0.31	-1.270	0.207

Note: HDP, hypertensive disorders in pregnancy.