Effects of Modes and Timings of Delivery on Feto-Maternal Outcomes in Women with Severe Preeclampsia: A Multi-Center Survey in Mainland China

Figures & data

Table 1 Demographic Characteristics in Preeclamptic Women [(Mean, SD, (N, %)]

	Vaginal Delivery (N = 380)	Cesarean Section (N = 2136)	χ^2(T)	95% CI	P
Age (year)	29.2±5.9	29.0±6.1	−0.821	−0.94–0.38	0.412
Parity	1.3±0.7	1.2±0.6	−2.218	−0.16-−0.009	0.027
BMI	22.15±3.5	22.62±3.5	1.575	−0.12–1.06	0.115
Maternal education higher than bachelor degree	212	1946	0.252		0.615
Gestational age at delivery	34.2±5.3	36.0±3.3	8.401	1.17–2.28	0.000
Birth weight (g)	2163.8 ± 1069.1	2442.7 ± 862.2	−4.631	−397.3–−160.5	0.000

Figure 1 The step-by-step description of the analysis of data.

Figure 2 The delivery modes in the four groups (χ² = 212.88, P = 0.000).

Notes: Group 1 (≤27+ 6 weeks), Group 2 (28–33+ 6 weeks), Group 3 (34–36+ 6 weeks), and Group 4 (≥37 weeks).

Abbreviations: CD, cesarean-section delivery; VD, vaginal delivery.

Table 2 Comparison of Maternal Complications in Different Groups [(Mean, SD, (N, %)]

	Vaginal Delivery (N = 380)	Cesarean Section (N = 2136)	χ^2(T)	95% CI	P
Postpartum hemorrhage	20 (5.3%)	120 (5.6%)	0.077	0.57–1.52	0.781
Maternal death	2 (0.5%)	4 (0.2%)	0.459	0.52–15.4	0.498
Fetal distress	26 (6.8%)	203 (9.5%)	1.553	0.50–1.01	0.213
Neonatal asphyxia	2 (0.5%)	4 (0.2%)	1.559	0.52–15.5	0.212
Perinatal mortality	141 (50.4%)	71 (3.3%)	684.1	21.15–41.16	0.000

Table 3 Comparison of Maternal Complications Among Different Groups [N, %]

	Group 1 (N = 70)	Group 2 (N = 547)	Group 3 (N = 695)	Group 4 (N =1204)	χ^2	P
Postpartum hemorrhage	1 (1.4%)	22 (4.0%)	43 (6.2%)	74 (6.1%)	6.044	0.110
Maternal death	1	0	2	3	—–	—–

Notes: Group 1 (≤27^{+ 6} weeks), Group 2 (28–33^{+ 6} weeks), Group 3 (34–36^{+ 6} weeks), and Group 4 (≥37 weeks).

Figure 3 Maternal complications of different delivery modes among the four groups [N, %].

Notes: Group 1 (≤27+ 6 weeks), Group 2 (28–33+ 6 weeks), Group 3 (34–36+ 6 weeks), and Group 4 (≥37 weeks).

Abbreviations: CD, cesarean-section delivery; VD, vaginal delivery; PPH, postpartum hemorrhage.

Table 4 Comparison of Perinatal Complications of Different Delivery Methods at Different Gestational Ages [N, %]

	Group 1 (N = 70)		Group 2 (N = 547)		Group 3 (N = 695)		Group 4 (N = 1204)
	VD	CD	VD	CD	VD	CD	VD	CD
Fetal Distress	0 (0.0%)	1 (4.8%)	8 (7.4%)	60 (13.7%)	4 (8.7%)	58 (8.9%)	14 (7.9%)	84 (8.2%)
Neonatal Asphyxia	1 (2.0%)	3 (14.3%)	14 (12.9%)	160* (36.4%)	6 (13.0%)	86 (13.3%)	4 (2.3%)	42 (4.1%)
Perinatal Mortality	43 (87.8%)	15 (71.4%)	74 (68.5%)	44* (10.0%)	13 (28.3%)	15* (2.3%)	10 (5.6%)	8* (0.8%)

Notes: *P < 0.05. Group 1 (≤27^{+ 6} weeks), Group 2 (28–33^{+ 6} weeks), Group 3 (34–36^{+ 6} weeks), and Group 4 (≥37 weeks).

Abbreviations: CD, cesarean section delivery; VD, vaginal delivery.