The Effects of Vitamin D Supplement on Prevention of Recurrence of Preeclampsia in Pregnant Women with a History of Preeclampsia

Table 1

Baseline characteristics of participants per group.

Baseline characteristic variables	Intervention group; ()	Control group; ()	Meaningful level; ( value)
Age (mean ± SD)			0.017
Number of previous pregnancies (mean ± SD)			0.463
Weeks of pregnancy; (mean ± SD)			0.997
Systolic blood pressure; (mm Hg; mean ± SD)			0.028
Diastolic blood pressure; (mm Hg; mean ± SD)			0.975
Uterine cm; (mean ± SD)			0.597
24 h proteinuria (mg/cc; mean ± SD)			0.023
BMI < 18.5 kg/m^2 ( (%))	1 (1.4%)	1 (1.4%)	0.267
BMI, 18.5–24.9 kg/m^2 ( (%))	23 (32.9%)	14 (19.4%)	0.267
BMI, 25.0–29.9 kg/m^2 ( (%))	32 (45.7%)	35 (49.3%)	0.267
BMI ≥ 30.0 kg/m^2 ( (%))	13 (18.6%)	21 (29.6%)	0.267

: uterine height is measured as the distance between the midpoint of the pubic bone and highest peak of the uterus in cm, while the pregnant woman after voiding was lying in the supine position.