Research Article
Blood Type and Outcomes in Pregnant Women with Placenta Previa
Table 5
Maternal and gestation characteristics of the participant pregnant women by Rh-positive vs. Rh-negative blood groups.
| | Rh-positive (, 97.1%) | Rh-negative (, 2.9%) | value | value |
| | Maternal age (years), | | | 1.430 | 0.161 | | Advanced maternal age (>35 years old) | 399 (24.5%) | 15 (30.6%) | 0.958 | 0.328 | | Maternal height (cm) | | | 0.354 | 0.725 | | Maternal weight at delivery (kg) | | | 1.561 | 0.125 | | Maternal BMI at delivery (kg/m2), | | | 1.483 | 0.138 | | Married (%) | 1557 (95.6%) | 45 (91.8%) | 1.542 | 0.214 | | Prior miscarriages (%) | 816 (50.1%) | 22 (44.9%) | 0.513 | 0.474 | | Prior cesarean delivery | 561 (34.4%) | 17 (34.7%) | 0.001 | 0.970 | | Assisted reproductive techniques | 171 (10.5%) | 5 (10.2%) | 0.004 | 0.947 | | Twins | 67 (4.1%) | 2 (4.1%) | 0.001 | 0.991 | | Anterior placenta | 518 (45.2%) | 12 (34.3%) | 1.647 | 1.199 | | Complete placenta previa | 653 (40.1%) | 17 (34.7%) | 0.577 | 0.448 | | Placenta accreta spectrum | 258 (15.8%) | 7 (14.3%) | 0.086 | 0.769 | | Predelivery hemoglobin (g/L) | | | 0.758 | 0.452 | | Predelivery anemia () | 811 (52.5%) | 20 (42.6%) | 1.806 | 0.179 | | Antepartum hemorrhage | 499 (30.6%) | 19 (38.8%) | 1.478 | 0.224 |
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