Table 4 Maternal characteristics stratified for response ten years after pregnancy (n = 8198)
From: Maternal cardiovascular adaptation to twin pregnancy: a population-based prospective cohort study
Visit ten years after pregnancy (n = 4708) | No visit ten years after pregnancy (n = 3490) | P-value | |
|---|---|---|---|
Maternal characteristics | |||
Age at intake (years) | 30.6 (4.9) | 28.0 (5.4) | < 0.001 |
Non-Western ethnicity (%) | 1734 (36.8) | 1953 (56.0) | < 0.001 |
Lower education (%) | 2483 (52.7) | 2541 (72.8) | < 0.001 |
Nulliparous (%) | 2900 (61.6) | 1905 (54.6) | < 0.001 |
Assisted conception (%) | 280 (5.9) | 274 (7.9) | 0.01 |
BMI at intake (kg/m2) | 24.0 (19.6 to 33.2) | 24.4 (19.3 to 35.0) | 0.002 |
Smoking during pregnancy (%) | 1198 (25.4) | 1212 (34.7) | < 0.001 |
Birth | |||
Gestational age at birth (weeks) | 40.1 (36.9 to 42.1) | 40.0 (36.3 to 42.1) | < 0.001 |
Premature birth < 37 weeks (%) | 241 (5.1) | 246 (7.1) | < 0.001 |
Premature birth < 34 weeks (%) | 58 (1.2) | 68 (1.9) | 0.01 |
Birth weight (g) | 3411.0 (559.3) | 3336.7 (601.0) | < 0.001 |
Weight placenta (g) | 640.0 (153.7) | 644.2 (168.4) | 0.79 |