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Table 2 Characteristics of pregnancy outcomes for different maternal age groups (N = 63,137)

From: Age-specific effects on adverse pregnancy outcomes vary by maternal characteristics: a population-based retrospective study in Xiamen, China

 

Maternal age (years)

P-value

 

< 25

25–29

30–34

≥ 35

Pregnancy outcomes

  

GDM

911 (9.2)

4592 (14.4)

3642 (23.0)

1952 (35.1)

< 0.001

Hypertension

11 (0.1)

48 (0.2)

41 (0.3)

35 (0.6)

< 0.001

Cesarean

2301 (23.3)

9712 (30.5)

6754 (42.7)

3094 (55.6)

< 0.001

Preterm birth

428 (4.3)

1458 (4.6)

878 (5.5)

390 (7.0)

< 0.001

SGA

458 (4.6)

1420 (4.5)

617 (3.9)

203 (3.6)

< 0.001

LGA

1312 (13.3)

4390 (13.8)

3189 (20.1)

1275 (22.9)

< 0.001

Macrosomia

279 (2.8)

1014 (3.2)

559 (3.5)

216 (3.9)

< 0.001

LBW

454 (4.6)

1444 (4.5)

839 (5.3)

336 (6.0)

< 0.001

Stillbirth

413 (4.2)

1255 (3.9)

514 (3.2)

153 (2.7)

< 0.001

Apgar score < 7 at 5 min

14 (0.1)

27 (0.1)

23 (0.1)

2 (0.0)

0.057

  1. Data showed as n (%). GDM, gestational diabetes mellitus; LBW, low birth weight; SGA, small-for-gestational-age; LGA, large-for-gestational-age