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Table 1 Characteristics of the study participants

From: Metabolic profiling of pregnancy: cross-sectional and longitudinal evidence

Characteristics NFBC1966 YFS FINRISK1997
Non-pregnant Pregnant Non-pregnant Pregnant Non-pregnant Pregnant
Number 1782 191 806 60 1350 71
Gestational age at blood sampling (week) 22 (13–29) 23 (15–30)
Age (year) 31 (0) 31 (0) 32 (5) 31 (5) 37 (7) 32 (5)
Weight (kg) 65 (13) 67 (11) 67 (13) 71 (12) 66 (12) 70 (13)
Waist (cm) 79 (11) 82 (12) 80 (11) 85 (10) 77 (10) 83 (13)
Hip (cm) 97 (8) 97 (8) 100 (9) 102 (7) 99 (8) 101 (9)
BMI (kg/m2) 24 (4) 24 (4) 24 (5) 26 (4) 25 (4) 26 (4)
Systolic blood pressure (mmHg) 117 (10) 116 (9) 111 (10) 109 (11) 119 (10) 114 (11)
Diastolic blood pressure (mmHg) 73 (8) 66 (10) 68 (8) 61 (9) 74 (8) 68 (9)
Smoking prevalence (%) 38 25 20 10 23 8
Alcohol usage (g/day) 2.1 (0.6–5.7) 1.0 (0.0–3.5) 3.3 (0.0–8.2) 0.0 (0.0–0.0) 1.8 (0.0–7.0) 0.0 (0.0–0.0)
Parity (n) 2 (1–2) 1 (0–2) 1 (0–2) 1 (0–2)
  1. Values are mean (SD) for normally distributed and median (interquartile range) for skewed variables. Information on whether women have given birth before was not available for FINRISK1997. BMI: body mass index