Table 1 Clinical baseline data of 24,548 pregnant women with GDM in Hebei Province, China, from 2015 to 2021.

From: Risk of adverse pregnancy outcomes in pregnant women with gestational diabetes mellitus by age: a multicentric cohort study in Hebei, China

 

20–24 years (n = 1489)

25–29 years (n = 8177)

30–34 years (n = 9323)

35–39 years (n = 4646)

40–44 years (n = 916)

F/χ2

P

Primipara

1229 (82.5)

5268 (64.4)

3017 (32.4)

611 (13.2)

87 (9.5)

  

Multipara

260 (17.5)

2909 (35.6)

6306 (67.6)

4035 (86.8)

829 (90.5)

5044.73

 < 0.001

History of cesarean delivery

118 (7.9)

1537 (18.8)

3536 (37.9)

2368 (51.0)

429 (46.8)

2042.03

 < 0.001

Marital Status

 Married

1483 (99.6)

8144 (99.6)

9287 (99.6)

4627 (99.6)

912 (99.6)

  

 Single

6 (0.4)

33 (0.4)

36 (0.4)

19 (0.4)

4 (0.4)

0.09

0.999

Education (year)

 ≤ 6

17 (2.1)

73 (1.4)

103 (1.6)

90 (2.9)

28 (3.6)

  

 7–9

307 (9.1)

1048 (31.1)

1216 (36.1)

665 (19.7)

134 (4.0)

  

 10–12

0 (0.0)

0 (0.0)

0 (0.0)

1 (0.0)

188 (24.2)

  

 > 12

489 (60.1)

4193 (78.9)

4925 (78.9)

2374 (75.8)

427 (55.0)

3976.78

 < 0.001

Delivery place

Tertiary Hospita

990 (66.5)

6030 (73.7)

7132 (76.5)

3708 (79.8)

752 (82.1)

  

Secondary Hospital

499 (33.5)

2144 (26.2)

2190 (23.5)

938 (20.2)

164 (17.9)

  

Primary Hospital

0 (0.0)

3 (0.0)

1 (0.0)

0 (0.0)

0 (0.0)

155.34

 < 0.001

Prenatal care

Adequate

580 (41.6)

3728 (48.3)

4442 (50.2)

2028 (46.4)

374 (43.6)

  

Intermediate

742 (53.2)

3664 (47.5)

4035 (45.6)

2106 (48.2)

424 (49.4)

  

Inadequate

72 (5.2)

320 (4.1)

378 (4.3)

233 (5.3)

60 (7.0)

66.29

 < 0.001

Gestational Age (weeks)

38.7 (1.7)

38.7 (1.6)

38.4 (1.6)

38.2 (1.6)

37.8 (1.6)

112.74

 < 0.001

Neonatal Sex

 Male

728 (48.9)

4174 (51.0)

4802 (51.5)

2411 (51.9)

489 (53.4)

  

 Female

761 (51.1)

4003 (49.0)

4520 (48.5)

2235 (48.1)

427 (46.6)

7.70

0.463

  1. Continuous variables are presented as‾χ ± S, counting data variables are presented as n (%). p < 0.05 was considered statistically significant. GDM, gestational diabetes mellitus.