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Table 2 Maternal characteristics and pregnancy outcome in relation to maternal obesity class. Categorical variables N (%)

From: Maternal obesity (Class I-III), gestational weight gain and maternal leptin levels during and after pregnancy: a prospective cohort study

 

Obesity class I

Obesity class II

Obesity class III

P-value

Parity

   

0.714

 Nulliparous

96 (43.0)

36 (46.8)

21 (48.8)

 

 Multiparous

127 (57.0)

41 (53.2)

22 (51.2)

 

Smoking in pregnancy

   

0.059

 No

206 (93.2)

72 (94.7)

35 (83.3)

 

 Yes

15 (6.8)

4 (5.3)

7 (16.7)

 

Alcohol in first trimester

   

#

 No/rarely

223 (100.0)

77 (100.0)

43 (100.0)

 

 Yes

0 (0.0)

0 (0.0)

0 (0.0)

 

Pre-term (<37 weeks)

   

0.046

 No

209 (94.6)

76 (100.0)

38 (90.5)

 

 Yes

12 (5.4)

0 (0.0)

4 (9.5)

 

Post-term (≥42 weeks)

   

0.993

 No

206 (93.2)

71 (93.4)

39 (92.9)

 

 Yes

15 (6.8)

5 (6.6)

3 (7.1)

 

GDM

   

0.505

 No

211 (94.6)

75 (97.4)

40 (93.0)

 

 Yes

12 (5.4)

2 (2.6)

3 (7.0)

 

Pre-eclampsia

   

0.009

 No

211 (94.6)

68 (88.3)

35 (81.4)

 

 Yes

12 (5.4)

9 (11.7)

8 (18.6)

 

Hypertension pre-pregnancy

   

#

 No

221 (99.1)

77 (100.0)

42 (97.7)

 

 Yes

2 (0.9)

0 (0.0)

1 (2.3)

 
  1. GDM = Gestational diabetes mellitus
  2. P < 0.05 statistical significance in difference between obesity class I-III groups
  3. # = Assumption for chi2-test not fulfilled