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Table 3 Adverse maternal outcomes for the second CD of women in different age ranges at first CD

From: Maternal age at first cesarean delivery related to adverse pregnancy outcomes in a second cesarean delivery: a multicenter, historical, cross-sectional cohort study

Variables

Age

N (%)

OR (95%CI)

Model 1

Model 2

PPH

18–24

155 (5.7)

1.581 (1.28–1.96)

1.521 (1.23–1.89)

1.505 (1.05–2.16)

25–29

204 (3.7)

1

1

1

30–34

64 (3.7)

0.989 (0.74–1.32)

0.971 (0.73–1.29)

0.974 (0.65–1.46)

≥35

9 (4.1)

1.112 (0.56–2.20)

0.913 (0.46–1.82)

0.88 (0.35–2.23)

Severe PPH

18–24

79 (2.9)

1.45 (1.08–1.94)

1.383 (1.03–1.86)

1.188 (0.72–1.95)

25–29

112 (2)

1

1

1

30–34

28 (1.6)

0.785 (0.52–1.19)

0.729 (0.48–1.11)

0.858 (0.49–1.52)

≥35

4 (1.8)

0.895 (0.33–2.45)

0.552 (0.20–1.57)

0.793 (0.21–3.06)

Blood transfusion

18–24

182 (6.7)

1.76 (1.44–2.16)

1.745 (1.42–2.14)

1.517 (1.21–1.91)

25–29

217 (3.9)

1

1

1

30–34

60 (3.4)

0.868 (0.65–1.16)

0.816 (0.61–1.10)

0.926 (0.68–1.25)

≥35

10 (4.5)

1.165 (0.61–2.23)

0.853 (0.44–1.67)

1.127 (0.57–2.23)

DIC

18–24

3 (0.1)

3.059 (0.51–18.32)

2.987 (0.49–18.22)

1.501 (0.08–26.37)

25–29

2 (0)

1

1

1

30–34

0

0

0.806 (0.61–0.10)

0

≥35

1 (0.5)

12.607 (1.14–139.57)

13.95 (1.05–185.44)

51.8 (0.32–8409.68)

Uterine rupture

18–24

11 (0.4)

2.497 (1.03–6.03)

2.579 (1.06–6.25)

2.034 (0.75–5.49)

25–29

9 (0.2)

1

1

1

30–34

4 (0.2)

1.403 (0.43–4.56)

1.294 (0.39–4.27)

1.626 (0.48–5.53)

≥35

2 (0.9)

5.622 (1.21–26.18)

5.002 (1.01–24.73)

7.952 (1.43–44.10)

Hysterectomy

18–24

2 (0.1)

0.679 (0.14–3.37)

0.304 (0.06–1.69)

0.387 (0.03–4.50)

25–29

6 (0.1)

1

1

1

30–34

1 (0.1)

0.526 (0.06–4.37)

1.208 (0.13–10.90)

0.939 (0.05–16.67)

≥35

0

0

0.806 (0.61–0.10)

0

Bladder injury

18–24

43 (1.6)

1.111 (0.76–1.62)

1.03 (0.71–1.50)

1.199 (0.80–1.81)

25–29

79 (1.4)

1

1

1

30–34

31 (1.8)

1.242 (0.82–1.89)

1.3 (0.85–2.00)

1.128 (0.73–1.74)

≥35

3 (1.4)

0.953 (0.30–3.04)

0.904 (0.28–2.94)

0.661 (0.20–2.19)

Puerperal infection

18–24

10 (0.4)

0.97 (0.46–2.06)

0.986 (0.46–2.10)

0.737 (0.32–1.72)

25–29

21 (0.4)

1

1

1

30–34

4 (0.2)

0.6 (0.21–1.75)

0.585 (0.20–1.71)

0.68 (0.23–2.06)

≥35

4 (1.8)

4.853 (1.65–14.26)

4.634 (1.58–13.64)

6.864 (1.95–24.22)

  1. PPH Postpartum hemorrhage, DIC Disseminated intravascular coagulation, OR Odds ratio, CI Confidence interval;
  2. Model 1: adjusted factors included gravidity, parity, BMI, ART, and interval months
  3. Model 2: adjusted factors included gravidity, parity, BMI, ART, interval months, and maternal age at second CD