Table 1 Maternal and neonatal characteristics of study participants
Variables | All participants (N = 975) |
|---|---|
Maternal age, years (N = 973) | 31.3 (4.7) |
<35 years, N (%) | 716 (73.4) |
≥35 years, N (%) | 257 (26.4) |
Missing, N (%) | 2 (0.2) |
Height, cm | 158.5 (5.2) |
Pre-pregnancy body weight, kg | 54.0 (8.5) |
Pre-pregnancy BMI, kg/m² | 21.5 (3.1) |
Underweight (<18.5 kg/m²), N (%) | 124 (12.7) |
Normal weight (18.5–24.9 kg/m²), N (%) | 735 (75.4) |
Overweight/Obese (≥25.0 kg/m²), N (%) | 116 (11.9) |
Parity, N (%) | |
Primipara | 587 (60.2) |
Multipara without HDP in a previous pregnancy | 356 (36.5) |
Multipara with HDP in a previous pregnancy | 20 (2.1) |
Missing | 12 (1.2) |
ART, N (%) | 27 (2.8) |
Family history of hypertension, N (%) | 50 (5.1) |
Smoking status, N (%) | |
No smoking before conception | 824 (84.5) |
Until conception was recognized | 120 (12.3) |
Smoking during pregnancy | 31 (3.2) |
Alcohol drinking, N (%) | |
No alcohol intake before conception | 518 (53.1) |
Until conception was recognized | 349 (35.8) |
Alcohol intake during pregnancy | 99 (10.2) |
Missing | 9 (0.9) |
HbA1c before 20 weeks of gestation, % (N = 957) | 5.0 (0.3) |
Season of estimated date of confinement, N (%) | |
Spring | 242 (24.8) |
Summer | 246 (25.2) |
Autumn | 252 (25.8) |
Winter | 235 (24.1) |
Hyperthyroidism, N (%) | 7 (0.7) |
Hypothyroidism, N (%) | 2 (0.2) |
Chronic kidney disease, N (%) | 0 (0.0) |
Gestational age when office BP was measured, weeks | 13.9 (2.3) |
Gestational age when home BP was measured, weeks | 14.0 (2.2) |
Number of office BP measurements, median (range) | 2 (1–2) |
Number of home BP measurements, median (range) | 3 (1–7) |
Office SBP before 20 weeks of gestation, mmHg | 108 (10) |
Office DBP before 20 weeks of gestation, mmHg | 66 (8) |
Office MAP before 20 weeks of gestation, mmHg | 80 (8) |
Home SBP before 20 weeks of gestation, mmHg | 104 (9) |
Home DBP before 20 weeks of gestation, mmHg | 63 (7) |
Home MAP before 20 weeks of gestation, mmHg | 77 (7) |
PMPCs, N (%) | 170 (17.4) |
New-onset HDP, N (%) | 92 (9.4) |
Preeclampsia, N (%) | 17 (1.7) |
Gestational hypertension, N (%) | 75 (7.7) |
Placental abruption, N (%) | 3 (0.3) |
Preterm delivery (<37 weeks of gestation), N (%) | 29 (3.0) |
SGA infants (Birth weight <10th percentile), N (%) | 65 (6.7) |
Stillbirth at ≥28 weeks of gestation, N (%) | 2 (0.2) |
Redefined PMPCs by replacing new-onset HDP with preeclampsia, N (%) | 103 (10.6) |
Infant sex, N (%) | |
Male | 507 (52.0) |
Female | 468 (48.0) |
Delivery week, weeks | 39.6 (1.7) |
Infant birth weight, g | 3,053 (420) |
Low birth weight (<2,500 g), N (%) | 70 (7.2) |
