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Table 2 General characteristics of the MoBa sample (n = 47 011)

From: Adherence of pregnant women to Nordic dietary guidelines in relation to postpartum weight retention: results from the Norwegian Mother and Child Cohort Study

Variable

Categories

N

%

HEI-NFG score1

HEI-NNR score1

Maternal age at delivery

≤ 19 years

394

0.8

46.6 (7.7)

45.1 (3.2)

20-24 years

4 884

10.4

47.4 (7.7)

45.7 (3.0)

25-29 years

16 282

34.6

49.4 (7.3)

46.3 (2.6)

30-34 years

17 679

37.6

50.4 (7.2)

46.6 (2.4)

35-39 years

6 846

14.6

51.0 (7.1)

46.9 (2.2)

≥ 40 years

926

2.0

52.0 (7.1)

46.9 (2.2)

Pre-pregnancy BMI

< 18.5 kg/m2

1 346

2.9

49.6 (7.6)

45.9 (2.7)

18.5-24.9 kg/m2

31 012

66.0

50.2 (7.2)

46.4 (2.5)

25-29.9 kg/m2

10 316

21.9

49.2 (7.4)

46.3 (2.6)

30-34.9 kg/m2

3 195

6.8

48.7 (7.4)

46.3 (2.7)

≥ 35 kg/m2

1 142

2.4

48.6 (7.4)

46.2 (2.8)

Gestational weight gain

< 10 kg

7 253

15.4

49.5 (7.5)

46.1 (2.8)

10-15 kg

19 655

41.8

50.1 (7.2)

46.5 (2.5)

16-19 kg

10 692

22.7

49.9 (7.2)

46.5 (2.5)

≥ 20 kg

9 411

20.0

49.3 (7.4)

46.5 (2.5)

Maternal education

< 12 years

2 766

5.9

47.7 (7.9)

45.6 (3.1)

12 years

11 488

24.4

48.4 (7.5)

45.9 (2.8)

13-16 years

20 220

43.0

50.0 (7.1)

46.5 (2.4)

17+ years

11 570

24.6

51.5 (6.9)

46.8 (2.2)

Other/missing

967

2.1

49.4 (7.1)

46.1 (2.7)

Household income

Both incomes < 300 000 NOK

13 651

29.0

48.9 (7.4)

46.1 (2.7)

One income ≥ 300 000 NOK

19 709

41.9

49.8 (7.3)

46.4 (2.5)

Both incomes ≥ 300 000 NOK

12 476

26.5

50.9 (7.0)

46.7 (2.3)

Missing data

1 175

2.5

49.4 (7.7)

46.0 (2.8)

Marital status

Married

21 675

46.1

50.4 (7.2)

46.6 (2.4)

Single, widow

1 003

2.1

48.9 (7.9)

45.7 (3.1)

Cohabitants

23 644

50.3

49.3 (7.4)

46.2 (2.6)

Other or not known

689

1.5

49.6 (7.6)

45.9 (2.9)

Parity

Primiparous

25 797

54.9

49.7 (7.4)

46.3 (2.6)

1 previous pregnancy

13 783

29.3

49.7 (7.3)

46.4 (2.5)

2 previous pregnancies

6 020

12.8

50.5 (7.1)

46.6 (2.4)

≥ 3 previous pregnancies

1 375

2.9

50.6 (7.4)

46.6 (2.4)

Missing data

36

0.1

50.6 (8.2)

46.7 (2.3)

Birth weight

< 2 500 g

1 204

2.6

48.8 (7.6)

46.1 (2.7)

≥ 2 500 g

45 807

97.4

49.8 (7.3)

46.4 (2.5)

Breastfeeding duration (up to 6 months postpartum)

None or < 1 month

1 519

3.2

48.0 (7.7)

45.9 (2.8)

1-3 months

4 273

9.1

48.0 (7.6)

45.8 (2.9)

4-5 months

2 600

5.5

48.8 (7.6)

46.0 (2.8)

6 months

38 619

82.2

50.2 (7.2)

46.5 (2.4)

Exercise during pregnancy (week 17)

No

6 486

13.8

47.3 (7.5)

45.7 (3.0)

Less than weekly

9 346

19.9

48.7 (7.0)

46.2 (2.6)

1-2 times weekly

14 109

30.0

50.2 (7.1)

46.5 (2.4)

≥ 3 times weekly

13 590

28.9

51.6 (7.1)

46.8 (2.3)

Missing data

3 480

7.4

48.9 (7.6)

46.1 (2.7)

Smoking during pregnancy

No smoking during pregnancy

43 041

91.6

50.0 (7.2)

46.5 (2.5)

Occasional

1 247

2.7

48.4 (7.8)

45.8 (2.8)

Daily

2 420

5.2

46.4 (7.8)

45.2 (3.2)

Missing

303

0.6

49.6 (7.7)

46.1 (3.0)

Alcohol during pregnancy (week 22)

Never

41 503

88.3

49.7 (7.3)

46.4 (2.6)

< 0.5 times per week

4 588

9.8

50.5 (7.1)

46.5 (2.4)

≥ 0.5 times per week

920

2.0

50.4 (7.1)

46.4 (2.5)

  1. 1Mean value (standard deviation).