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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).