Table 3 Analysis of selected top 11 important variables in the study population.
(a) In training set | |||
|---|---|---|---|
Selected variables | Pregnancy-associated HTN (−) (n = 949) | Pregnancy-associated HTN ( +) (n = 22) | P-value |
Variables before pregnancy | |||
Maternal age | 32.2 ± 3.9 | 33.3 ± 4.9 | 0.383 |
History of preeclampsia | 7 (0.7%) | 2 (9.1%) | 0.016 |
Weight before pregnancy | 57.9 ± 10.1 | 69.0 ± 13.9 | < 0.001 |
BMI before pregnancy | 22.2 ± 3.6 | 26.2 ± 5.2 | < 0.001 |
Variables in the first trimester | |||
Systolic BP in early pregnancy | 113.3 ± 11.4 | 132.7 ± 17.2 | < 0.001 |
Diastolic BP in early pregnancy | 67.3 ± 8.4 | 80.5 ± 10.8 | < 0.001 |
Systolic BP in late first trimester | 112.6 ± 11.4 | 126.3 ± 14.4 | < 0.001 |
Diastolic BP in late first trimester | 67.6 ± 8.6 | 77.9 ± 9.8 | < 0.001 |
Weight in late first trimester | 58.8 ± 10.1 | 69.7 ± 14.0 | < 0.001 |
BMI in late first trimester | 22.5 ± 3.6 | 26.4 ± 5.2 | < 0.001 |
Hemoglobin level in the first trimester | 12.6 ± 1.0 | 13.6 ± 1.0 | < 0.001 |
(b) In test set | |||
|---|---|---|---|
Selected variables | Pregnancy-associated HTN (−) (n = 365) | Pregnancy-associated HTN ( +) (n = 11) | P-value |
Variables before pregnancy | |||
Maternal age | 32.4 ± 4.2 | 32.4 ± 4.3 | 0.891 |
History of preeclampsia | 1 (0.3%) | 2 (18.2%) | 0.002 |
Weight before pregnancy | 58.5 ± 10.9 | 65.1 ± 16.2 | 0.124 |
BMI before pregnancy | 22.3 ± 3.8 | 25.5 ± 6.2 | 0.062 |
Variables in the first trimester | |||
Systolic BP in early pregnancy | 115.4 ± 11.1 | 130.5 ± 11.4 | < 0.001 |
Diastolic BP in early pregnancy | 68.8 ± 8.4 | 79.1 ± 10.2 | 0.001 |
Systolic BP in late first trimester | 114.4 ± 11.4 | 126.4 ± 10.1 | 0.001 |
Diastolic BP in late first trimester | 68.5 ± 8.2 | 77.0 ± 11.8 | 0.011 |
Weight in late first trimester | 59.3 ± 10.7 | 65.2 ± 16.5 | 0.169 |
BMI in late first trimester | 22.6 ± 3.7 | 25.5 ± 6.1 | 0.089 |
Hemoglobin level in the first trimester | 12.7 ± 1.0 | 13.2 ± 1.0 | 0.319 |
