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Table 2 Number of deliveries by primiparous women and explanatory factors by maternal country of birth: Denmark 2004–2015

From: Ethnic differences in the risk of caesarean section: a Danish population-based register study 2004–2015

Total number of deliveries by maternal country of birth Denmark n = 272,888 Philippines n = 1127 Thailand n = 1088 Pakistan n = 1070 Somalia n = 956 Vietnam n = 953 Lebanon n = 926 Iceland n = 910 Iran n = 906 Afghanistan n = 860 Morocco n = 472
Maternal age at delivery (years)
 ≤ 24 19.9 10.1 15.3 27.7 48.2 11.8 52.5 24.2 12.0 39.3 16.5
 25–34 69.4 78.0 64.2 65.9 44.9 77.1 42.0 69.5 69.1 55.7 65.3
 ≥ 35 10.7 11.9 20.6 6.5 6.9 11.1 5.5 6.4 18.9 5.0 18.2
Gestational age at delivery (weeks)
 Preterm (22 + 0– 36 + 6) 6.6 7.5 7.8 7.2 6.7 7.9 5.8 5.6 5.3 5.1 4.5
 Term (37 + 0–41 + 6) 87.5 88.6 89.9 89.4 80.5 89.6 90.1 88.7 91.1 91.1 86.8
 Postterm (≥ 42 + 0) 5.8 3.8 2.3 3.5 12.7 2.3 4.1 5.7 3.5 3.6 8.5
 Missing 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.0 0.1 0.2 0.2
BMI
 Underweight < 18.5 4.2 12.6 14.6 10.7 12.0 16.0 6.4 3.9 5.5 8.3 4.2
 Normalweight 18.5–24.9 62.3 67.7 68.9 54.4 53.9 74.1 63.4 61.8 66.7 65.2 56.4
 Overweight 25–29.9 19.3 11.9 8.7 14.8 19.0 4.8 17.1 20.8 17.0 15.5 22.7
 Obese ≥30 11.0 2.8 2.1 8.1 7.6 1.1 6.8 10.2 6.3 3.0 6.8
 Missing 3.3 5.0 5.6 12.1 7.4 4.1 6.4 3.4 4.5 8.0 10.0
Maternal height (mean) 168.5 155.4 158.4 160.7 164.7 156.9 162.5 167.8 162.9 160.3 163.5
 Missing 2.7 4.4 5.1 10.4 5.7 3.2 5.6 3.0 4.0 6.6 8.5
Diabetes
 No 97.2 94.2 95.6 92.5 95.9 96.0 97.4 98.7 95.5 94.9 91.1
 Yes 2.8 5.8 4.4 7.5 4.1 4.0 2.6 1.3 4.5 5.1 8.9
Gestational hypertensive disorders
 No 93.7 95.3 97.0 95.0 91.2 97.7 97.5 93.7 96.9 97.1 96.8
 Yes 6.3 4.7 3.0 5.1 8.8 2.3 2.5 6.3 3.1 2.9 3.2
Birthweight
 < 2500 g. 4.5 5.8 5.9 9.2 7.4 6.5 4.1 4.0 5.0 5.0 3.6
 2500–4500 g. 92.6 91.3 91.5 87.9 90.2 91.8 92.6 91.8 92.7 89.9 92.8
 > 4500 g. 1.9 1.5 0.9 0.3 0.8 0.6 0.9 3.3 1.3 2.3 1.7
 Missing 1.0 1.4 1.7 2.6 1.6 1.1 2.5 1.0 1.0 2.8 1.9
 Mean (g.) 3432.9 3326.4 3313.5 3141.9 3212.9 3212.4 3289.3 3524.2 3344.7 3347.7 3409.8
Maternal education (years)
 < 10 16.0 9.8 27.0 17.9 52.2 25.3 41.0 11.1 16.0 32.8 19.5
 10–12 38.4 18.1 22.4 16.9 25.5 25.5 27.9 17.5 25.7 27.6 24.8
 > 12 44.5 14.6 9.2 10.7 4.3 21.8 11.3 31.5 34.0 8.7 12.3
 No information 1.1 57.6 41.4 54.6 18.0 27.4 19.8 39.9 24.3 30.9 43.4
Paternal origin
 Danish 90.7 79.5 82.0 2.1 4.5 28.3 5.5 37.1 26.1 2.7 10.0
 Immigrant/ descendant 6.0 16.9 14.9 90.8 70.0 66.5 78.1 58.5 70.5 85.8 85.4
 Missing 3.4 3.6 3.1 7.2 25.5 5.1 16.4 4.4 3.4 11.5 4.7
  1. Frequencies are given in percentages and in rounded estimates