Table 1 Number of deliveries by primiparous women and explanatory factors by maternal country of birth: Denmark 2004–2015
Total number of deliveries by maternal country of birth | Denmark n = 272,888 | Ex. Yugoslavia n = 2699 | Poland n = 2685 | Turkey n = 1856 | Iraq n = 1663 | Germany n = 1500 | Norway n = 1486 | Sweden n = 1403 | Romania n = 1346 | China n = 1292 |
|---|---|---|---|---|---|---|---|---|---|---|
Maternal age at delivery (years) | ||||||||||
≤ 24 | 19.9 | 33.3 | 19.2 | 33.2 | 51.9 | 12.0 | 10.4 | 8.5 | 17.1 | 10.1 |
25–34 | 69.4 | 59.5 | 72.1 | 59.1 | 42.5 | 67.6 | 76.6 | 73.0 | 74.1 | 76.4 |
≥ 35 | 10.7 | 7.2 | 8.7 | 7.7 | 5.7 | 20.4 | 13.1 | 18.5 | 8.8 | 13.5 |
Gestational age at delivery (weeks) | ||||||||||
Preterm (22 + 0–36 + 6) | 6.6 | 5.9 | 4.8 | 5.9 | 5.8 | 5.6 | 6.3 | 5.1 | 5.1 | 4.5 |
Term (37 + 0–41 + 6) | 87.5 | 88.7 | 89.8 | 88.5 | 90.0 | 89.2 | 87.3 | 88.5 | 92.1 | 91.5 |
Postterm (≥ 42 + 0) | 5.8 | 5.4 | 5.3 | 5.4 | 4.2 | 5.0 | 6.4 | 6.3 | 2.7 | 4.0 |
Missing | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.2 | 0.0 | 0.1 | 0.1 | 0.0 |
BMI | ||||||||||
Underweight < 18.5 | 4.2 | 5.7 | 7.0 | 3.2 | 6.0 | 3.7 | 4.9 | 5.5 | 9.6 | 16.4 |
Normalweight 18.5–24.9 | 62.3 | 70.3 | 70.8 | 58.6 | 61.9 | 69.5 | 74.4 | 76.6 | 69.0 | 70.5 |
Overweight 25–29.9 | 19.3 | 13.9 | 14.3 | 20.1 | 19.1 | 16.7 | 14.3 | 11.4 | 14.7 | 7.1 |
Obese ≥30 | 11.0 | 5.7 | 4.3 | 6.7 | 7.9 | 7.1 | 4.2 | 3.1 | 4.4 | 1.3 |
Missing | 3.3 | 4.4 | 3.6 | 11.4 | 5.1 | 3.1 | 2.3 | 3.5 | 2.3 | 4.6 |
Maternal height (mean) | 168.5 | 166.1 | 166.8 | 163.3 | 161.7 | 168.7 | 168.8 | 168.3 | 164.7 | 161.9 |
Missing | 2.7 | 3.7 | 3.1 | 10.6 | 4.3 | 2.9 | 2.2 | 2.7 | 2.2 | 3.7 |
Diabetes | ||||||||||
No | 97.2 | 96.9 | 97.4 | 94.2 | 95.2 | 97.5 | 98.0 | 98.9 | 96.7 | 93.9 |
Yes | 2.8 | 3.1 | 2.6 | 5.8 | 4.8 | 2.5 | 2.0 | 1.1 | 3.3 | 6.1 |
Gestational hypertensive disorders | ||||||||||
No | 93.7 | 96.4 | 95.2 | 96.3 | 97.1 | 95.5 | 95.5 | 93.7 | 96.9 | 98.2 |
Yes | 6.3 | 3.6 | 4.8 | 3.7 | 2.9 | 4.5 | 4.5 | 6.3 | 3.1 | 1.8 |
Birthweight | ||||||||||
< 2500 g. | 4.5 | 4.4 | 3.3 | 5.0 | 4.9 | 4.2 | 4.2 | 3.9 | 4.2 | 2.5 |
2500–4500 g. | 92.6 | 92.5 | 93.8 | 90.5 | 92.5 | 93.4 | 93.4 | 92.5 | 93.3 | 94.4 |
> 4500 g. | 1.9 | 1.7 | 1.6 | 2.0 | 0.8 | 1.5 | 1.4 | 2.2 | 1.2 | 2.2 |
Missing | 1.0 | 1.4 | 1.3 | 2.6 | 1.8 | 0.9 | 1.1 | 1.4 | 1.3 | 0.9 |
Mean (g.) | 3432.9 | 3405.7 | 3415.2 | 3362.7 | 3285.2 | 3406.7 | 3451.1 | 3444.9 | 3367.2 | 3443.6 |
Maternal education (years) | ||||||||||
< 10 | 16.0 | 24.4 | 5.3 | 34.3 | 46.4 | 5.4 | 3.6 | 4.2 | 2.8 | 7.0 |
10–12 | 38.4 | 34.5 | 13.5 | 26.0 | 24.4 | 17.2 | 15.1 | 16.2 | 10.1 | 13.6 |
> 12 | 44.5 | 22.1 | 18.9 | 12.3 | 10.9 | 35.4 | 47.9 | 41.7 | 18.9 | 34.1 |
No information | 1.1 | 19.0 | 62.4 | 27.4 | 18.2 | 42.0 | 33.4 | 37.9 | 68.2 | 45.3 |
Paternal origin | ||||||||||
Danish | 90.7 | 14.0 | 30.1 | 4.5 | 4.2 | 59.2 | 78.1 | 76.0 | 23.3 | 35.3 |
Immigrant/ descendant | 6.0 | 77.0 | 65.3 | 87.5 | 82.1 | 36.8 | 19.6 | 20.6 | 72.6 | 60.8 |
Missing | 3.4 | 9.0 | 4.7 | 8.0 | 13.8 | 4.0 | 2.3 | 3.4 | 4.1 | 3.9 |