Table 1 Basic characteristics
Normal BP (n = 17,476) | High BP (n = 604) | Controlled BP (n = 42) | Uncontrolled BP (n = 33) | P value | |
|---|---|---|---|---|---|
Maternal age (years) | 31.8 ± 4.9 | 32.9 ± 5.2 | 35.0 ± 5.3 | 35.9 ± 5.7 | <0.0001 |
Maternal pre-pregnancy BMI (kg/m2) | 21.3 ± 3.3 | 24.0 ± 5.1 | 26.0 ± 7.2 | 24.9 ± 5.5 | <0.0001 |
Maternal smoking | 0.1 | ||||
Never | 10,650 (60.9) | 345 (57.1) | 24 (57.1) | 17 (51.5) | |
Stop smoking before/after pregnancy | 6447 (36.9) | 238 (39.4) | 18 (42.9) | 16 (48.5) | |
Current | 379 (2.2) | 21 (3.5) | 0 | 0 | |
Maternal alcohol consumption | 0.2 | ||||
Never | 7949 (45.5) | 302 (50.0) | 18 (42.9) | 12 (36.4) | |
Stop drinking | 6045 (34.6) | 195 (32.3) | 17 (40.5) | 18 (54.6) | |
Drinking | 3444 (19.7) | 105 (17.4) | 7 (16.7) | 3 (9.1) | |
Missing | 38 (0.2) | 2 (0.3) | 0 | 0 | |
Maternal systolic BP at 1st trimester (mmHg) | 110.7 ± 11.3 | 127.3 ± 13.6 | 125.9 ± 16.7 | 138.0 ± 14.2 | <0.0001 |
Maternal diastolic BP at 1st trimester (mmHg) | 64.3 ± 8.9 | 77.1 ± 10.6 | 80.2 ± 12.1 | 86.2 ± 9.6 | <0.0001 |
Maternal glucose level at 1st trimester (mg/dl) | 84.5 ± 15.0 | 87.1 ± 13.1 | 93.0 ± 19.2 | 84.3 ± 10.6 | 0.0003 |
Proteinuria at 1st trimester | <0.0001 | ||||
± or less | 16,183 (92.6) | 530 (87.8) | 34 (81.0) | 24 (72.7) | |
+ 1 or more at least once | 936 (5.4) | 49 (8.1) | 3 (7.1) | 2 (6.1) | |
Missing | 357 (2.0) | 25 (4.1) | 5 (11.9) | 7 (21.2) | |
Maternal systolic BP after 20 gestational weeks (mmHg) | 110.5 ± 8.3 | 130.3 ± 8.2 | 120.7 ± 8.7 | 135.3 ± 5.7 | <0.0001 |
Maternal diastolic BP after 20 gestational weeks (mmHg) | 63.6 ± 6.8 | 79.7 ± 7.2 | 73.3 ± 7.2 | 85.6 ± 6.9 | <0.0001 |
Maternal antihypertensive drug use | |||||
Last year before pregnancy | 32 (0.2) | 6 (1.0) | 24 (57.1) | 15 (45.5) | <0.0001 |
1st trimester | 0 | 0 | 30 (71.4) | 23 (69.7) | <0.0001 |
2nd trimester | 0 | 0 | 35 (83.3) | 27 (81.8) | <0.0001 |
