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Table 1 Characteristics of the study population

From: Hemoglobin A1c as screening for gestational diabetes mellitus in Nordic Caucasian women

  N Median (min–max) or n (%)
Age (years) 839 30 (19–46)
BMI (kg/m2) 854 24.3 (18.4–39.9)
Education at university college or university level 855 753 (88.1)
Exercised at moderate to high intensity at least three times per week prior to pregnancy 855 269 (31.5)
Nulliparity 853 485 (56.9)
Family history of diabetes 716 64 (8.9)
GDM in previous pregnancy 855 4 (0.4)
Previous macrosomic baby 855 70 (8.2)
Intervention group 855 429 (50)
Smoking in week 18–22 855 9 (1.1)
Systolic blood pressure week 18–22 (mmHg) 855 109 (82–147)
HbA1c week 18–22 [%, (mmol/mol)] 845 4.8 (4.2–5.7) [29 (22–39)]
HbA1c week 32–36 [%, (mmol/mol)] 722 5.1 (4.4–5.8) [32 (25–40)]
Fasting s-glucose week 18–22 (mmol/L) 849 4.3 (3.4–5.6)
2-h s-glucose week 18–22 (mmol/L) 836 4.8 (2.1–10.1)
Fasting s-glucose week 32–36 (mmol/L) 711 4.3 (3.2–6.4)
2-h s-glucose week 32–36 (mmol/L) 702 5.6 (2.3–9.9)
Birth weight (g) 853 3540 (825–4930)