Table 1 Comparison of General Data between the two Groups
Variable | Non-occurrence Group (n = 200) | Occurrence group (n = 300) | t/χ2/Z value | P value |
|---|---|---|---|---|
Age (years-old, x ± s) | 33.69 ± 5.80 | 32.74 ± 5.25 | 1.557 | 0.120 |
Primipara (n, %) | 104(52.00) | 146(48.70) | 0.533 | 0.465 |
Pre-delivery BMI [kg/m2, M (Q1, Q3)] | 30.00 (27.38, 32.23) | 31.51 (29.21, 34.91) | -1.610 | 0.107 |
History of preeclampsia (n, %) | 8(4.00) | 74(24.67) | 37.383 | < 0.001 |
Positive antiphospholipid antibody (n, %) | 5(2.50) | 13(4.33) | 1.162 | 0.281 |
Gravidity [n, M (Q1, Q3)] | 2.00 (1.00, 3.00) | 2.00 (1.00, 3.00) | -1.159 | 0.246 |
Parity [n, M (Q1, Q3)] | 0.00 (0.00, 1.00) | 0.00 (0.00, 1.00) | -0.531 | 0.595 |
Family history of hypertension (n, %) | 3(1.50) | 5(1.67) | 0.021 | 0.884 |
Duration of hypertension > 3 years (n, %) | 36(18.00) | 95(31.67) | 11.592 | < 0.001 |
Systemic treatment (n, %) | 41(20.50) | 30(10.00) | 10.859 | < 0.001 |
Gestational age at admission [Weeks, M (Q1, Q3)] | 37.72 (34.10, 38.71) | 35.01 (31.91, 37.42) | -9.825 | < 0.001 |