Table 2.
General characteristics of the MoBa sample (n = 47 011)
| Variable | Categories | N | % | HEI-NFG score 1 | HEI-NNR score 1 |
|---|---|---|---|---|---|
|
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) |
1Mean value (standard deviation).