Relationship between gestational body mass index, blood pressure variability, and postpartum depression in pregnant women with pre-eclampsia

Table 1 General information comparison

Characteristics	PPD group (n = 37)	Non-PPD group (n = 164)	t/χ2 value	P value
Age (years), mean ± SD	28.03 ± 3.55	27.46 ± 3.17	0.966	0.335
Pre-pregnancy BMI (kg/m2), mean ± SD	24.29 ± 2.85	23.43 ± 2.91	1.630	0.105
Degree of education, n (%)			1.710	0.191
High school or below	22 (59.46)	78 (47.56)
College degree or above	15 (40.54)	86 (52.44)
Place of residence, n (%)			0.162	0.687
Rural area	13 (35.14)	52 (31.71)
Cities and towns	24 (64.86)	112 (68.29)
Birth history, n (%)			0.363	0.547
Primipara	9 (24.32)	48 (29.27)
Multipara	28 (75.68)	116 (70.73)
Delivery gestational weeks (weeks), mean ± SD	38.74 ± 1.25	38.69 ± 1.31	0.211	0.833
Delivery method, n (%)			0.163	0.686
Vaginal delivery	16 (43.24)	65 (39.63)
Cesarean birth	21 (56.76)	99 (60.37)
Gender of newborn, n (%)			0.114	0.735
Male baby	23 (62.16)	97 (59.15)
Female infant	14 (37.84)	67 (40.85)
Newborn birth weight (kg), mean ± SD	3.70 ± 0.72	3.48 ± 0.65	1.823	0.069

PPD: Postpartum depression; BMI: Body mass index.

Table 2 Comparison of increased body mass index and blood pressure variability during pregnancy

Characteristics	PPD group (n = 37)	Non-PPD group (n = 164)	t value	P value
Increase in BMI during pregnancy (kg/m2)	6.45 ± 1.73	4.21 ± 1.07	10.120	< 0.001
24-hour systolic blood pressure variability (mmHg)	28.19 ± 6.48	21.58 ± 4.35	7.557	< 0.001
24-hour diastolic blood pressure variability (mmHg)	20.27 ± 4.16	17.13 ± 3.84	4.424	< 0.001

PPD: Postpartum depression; BMI: Body mass index.

Table 3 Results of multivariate Logistic regression analysis

Variable	β	SE	Wald χ2	P value	OR (95%CI)
Increased BMI during pregnancy	1.529	0.495	9.541	0.002	4.614 (1.749-12.170)
24-hour systolic blood pressure variability	1.068	0.403	7.023	0.008	2.910 (1.322-6.404)
24-hour diastolic blood pressure variability	0.853	0.369	5.343	0.021	2.347 (1.138-4.831)

BMI: Body mass index; OR: Odds ratio; CI: Confidence interval.