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Table 1 Descriptive data of the study population (n = 2049)

From: Impact of maternal body mass index on neonatal outcome

 

healthy weight

(n = 1446)

underweight

(n = 163)

overweight

(n = 309)

obese

(n = 126)

age (years)

30.2 ± 5.4

27.9 ± 6.1**

30.7 ± 5.9

29.5 ± 5.9

parity

1.5 ± 0.8

1.5 ± 0.9

1.6 ± 0.9*

2.0 ± 1.2**

primipara (%)

64.8

67.9

58.3*

43.9**

weight gain during

15.9 ± 5.4

15.7 ± 5.1

15.5 ± 6.5

12.8 ± 6.9**

pregnancy (kg)

    

maternal BMI

21.4 ± 1.7

17.6 ± 0.7**

26.9 ± 1.3**

33.9 ± 3.3**

smoking during

pregnancy (%)

16.3

25.2*

16.5

14.3

preterm delivery (%)

7.6

16.8**

12.2*

8.9

gestational age (weeks)

39.0 ± 2.1

38.6 ± 2.6(*)

38.8 ± 2.5

39.0 ± 1.9

section (%)

25.2

24.2

35.9**

32.5

RR sys. In 1st half of

pregnancy (mmHg)

114.3 ± 11.1

109.7 ± 10.4**

119.4 ± 11.8**

125.9 ± 11.7**

RR sys. In 2nd half of

pregnancy (mmHg)

115.3 ± 10.0

111.4 ± 9.6**

120.8 ± 11.9**

125.9 ± 10.6**

RR dia. In 1st half of

pregnancy (mmHg)

67.7 ± 7.5

65.2 ± 6.6**

71.8 ± 7.9**

75.1 ± 7.4**

RR dia. In 2nd half of

pregnancy (mmHg)

69.1 ± 6.9

66.8 ± 6.8**

72.9 ± 7.8**

75.4 ± 6.9**

hypertensive

complications (%)

5.7

2.5

13.2**

16.7**

proteinuria 2nd half of

pregnancy (%)

37.4

31.6

41.6

45.0

periph. edema 2nd half

of pregnancy (%)

34.6

19.1**

55.9**

59.3**

child sex (male %)

52.5

52.8

58.9*

52.4

birth weight (g)

3347.1 ± 607.8

3209.9 ± 666.7*

3452.5 ± 644.2*

3587.4 ± 617.5**

child length (cm)

50.8 ± 3.0

50.0 ± 3.7*

51.2 ± 2.9*

51.3 ± 2.9

child head

circumference (cm)

34.7 ± 2.0

34.3 ± 2.9*

34.9 ± 2.4*

35.2 ± 1.7*

ponderalindex

25.4 ± 3.2

25.6 ± 2.9

25.7 ± 2.5

26.7 ± 4.9**

LGA (%)

10.8

7.8

17.2*

27.6**

SGA (%)

11.6

14.9

6.4*

8.9

APGAR 5 min

9.4 ± 0.9

9.3 ± 0.9

9.3 ± 1.0

9.3 ± 0.9

APGAR 10 min

9.7 ± 0.6

9.7 ± 0.6

9.6 ± 0.6

9.6 ± 0.7

umbilical vein

blood pH

7.28 ± 0.08

7.26 ± 0.08*

7.28 ± 0.07

7.27 ± 0.07

admission to

neonatal-ICU (%)

22.9

20.2

30.4*

37.3**

  1. */**: p < 0.05/0.001 vs. healthy weight group. (*): p = 0.05 vs healthy weight group. LGA/SGA: Large/small for gestational age. Data are given as mean ± SD, metric data are analyzed using T-Test, categorical data were analyzed using chi2-test