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Table 2 Univariable logistic regression analysis of obstetric outcomes for the different age groups

From: Impact of aging on obstetric outcomes: defining advanced maternal age in Barcelona

OBSTETRIC OUTCOMES

Total

n = 25054

< 30 years

-Reference group-

n = 2437

30–34 years

n = 9643

35–39 years

n = 9887

40–44 years

n = 2807

≥45 years

n = 280

%(n)

%(n)

%(n)

(OR 95% CI)

%(n)

(OR 95% CI)

%(n)

(OR 95% CI)

%(n)

(OR 95% CI)

GD

9.8%(2450)

5.9%(143)

7.9%(758)

1.37 (1.14–1.65)

10.8%(1064)

1.94 (1.62–2.32)

15.4%(431)

2.91 (2.39–3.55)

19.3%(54)

3.83 (2.72–5.39)

PE

1.6%(403)

1.6% (38)

1.5%(140)

0.93 (0.65–1.34)

1.6%(157)

1.02 (0.71–1.46)

1.9%(54)

1.24 (0.82–1.88)

5.0% (14)

3.32 (1.78–6.21)

Late-onset PE

1.2%(309)

1.2% (29)

1.2%(114)

0.99 (0.66–1.50)

1.2%(117)

0.99 (0.66–1.50)

1.5% (41)

1.23 (0.76–1.98)

2.9% (8)

2.44 (1.11–5.40)

Placenta previa

1.3%(321)

0.7% (17)

1.1%(103)

1.54 (0.92–2.57)

1.2%(119)

1.73 (1.04–2.89)

2.3%(65)

3.38 (1.97–5.77)

6.1% (17)

9.20 (4.64–18.24)

C-section

30.4%(7615)

25.2%(615)

26.9%(2597)

1.09 (0.98–1.21)

30.5%(3020)

1.30 (1.18–1.44)

42.1%(1182)

2.16 (1.92–2.43)

71.8%(201)

7.54 (5.72–9.93)

- Emergency C-S

15.9%(3987)

16.4%(400)

15.6%(1509)

0.95 (0.84–1.07)

15.1%(1493)

0.91 (0.80–1.02)

18.1%(508)

1.13 (0.97–1.23)

27.5%(77)

1.93 (1.46–2.56)

- Elective C-S

14.5%(3628)

8.8%(215)

11.3%(1088)

1.31 (1.13–1.53)

15.4%(1527)

1.89 (1.62–2.19)

24.0%(674)

3.27 (2.77–3.85)

44.3%(124)

8.22 (6.25–10.81)

Composite adverse maternal outcome

3.3%(819)

3.2%(77)

3.0%(288)

0.94 (0.73–1.22)

3.3%(328)

1.05 (0.82–1.35)

4.0%(112)

1.27 (0.95–1.71)

5.0% (14)

1.61 (0.90–2.89)

Prolongued hospitalisation

1.0%(247)

0.7% (17)

0.9%(84)

1.23 (0.73–2.07)

1.1%(110)

1.62 (0.97–2.70)

1.1% (30)

1.63 (0.89–2.96)

2.1% (6)

3.69 (1.44–9.46)

Intrahepatic cholestasis of pregnancy

0.8%(189)

0.7% (16)

0.6%(62)

0.98 (0.56–1.70)

0.8%(82)

1.27 (0.74–2.17)

1.0% (27)

1.47 (0.79–2.73)

0.7% (2)

1.09 (0.25–4.76)

PPROM

1.1%(266)

0.9% (21)

1.0%(93)

1.12 (0.70–1.80)

1.1%(106)

1.25 (0.78–1.99)

1.4% (38)

1.58 (0.92–2.70)

2.9% (8)

3.38 (1.49–7.71)

Abruptio placentae

0.3%(67)

0.2% (5)

0.3% (27)

1.37 (0.53–3.55)

0.3% (26)

1.28 (0.49–3.34)

0.3% (9)

1.57 (0.52–4.68)

–

–

Chorioamnionitis

0.1% (29)

0.2% (4)

0.1% (11)

0.70 (0.22–2.18)

0.1% (13)

0.80 (0.26–2.46)

0.03% (1)

0.22 (0.24–1.94)

–

–

PERINATAL OUTCOMES

 

Stillbirth

0.2%(49)

0.3% (8)

0.2% (17)

0.54 (0.23–1.24)

0.2% (18)

0.55 (0.24–1.28)

0.2% (5)

0.54 (0.18–1.66)

0.4% (1)

1.09 (0.14–8.73)

  1. n number of. OR odds ratio. CI confidence interval. GD gestational diabetes. PE preeclampsia. PP placenta previa. C-S caesarian section. PPROM preterm prelabor rupture of membranes