Characteristics and potential risk factors | sPAS(219) | uPAS(120) | p value |
---|---|---|---|
Present conditions | |||
Advanced maternal age | 59(26.9) | 27(22.5) | 0.369a |
Pre-pregnancy BMI | 21.5 ± 3.2 | 21.2 ± 2.5 | 0.326b |
Gravidity | 4(3–5) | 3(2–5) | 0.004c |
Gravidity > 3 | 137(62.6) | 52(43.3) | < 0.001a |
Parity | 1(1–2) | 1(1–2) | 0.122c |
Parity > 1 | 76(34.7) | 35(29.2) | 0.299a |
Nulliparous women | 6(2.7) | 10(8.3) | 0.020a |
Multiple gestation | 10(4.6) | 8(6.7) | 0.409a |
In vitro fertilization | 9(4.1) | 8(6.7) | 0.302a |
Placenta previa | 203(92.7) | 85(70.8) | < 0.001a |
Placenta location |  |  | < 0.001a |
 Anterior | 145(66.2) | 34(28.3) | |
 Posterior | 57(26.0) | 78(65.0) | |
 bilateral/fundal | 17(7.8) | 8(6.7) | |
Pregnancy complications | 35(16.0) | 11(9.2) | 0.080a |
Adenomyosis/current fibroids | 10(4.6) | 6(5.0) | 0.857a |
Mullerian anomaly | 3(1.4) | 3(2.5) | 0.670d |
Severity of invasion |  |  | < 0.001a |
 Noninvasive (accreta) | 56(25.6) | 89(74.2) | |
 Invasive (increta/percreta) | 163(74.4) | 31(25.8) | |
Delivery mode |  |  | < 0.001d |
 Vaginal/operative vaginal | 0(0) | 4(3.3) e | |
 Planed CD | 217(99.1) | 81(67.5) | |
 Emergency CD | 2(0.9) | 35(29.2) | |
Delivery gestational weeks | 35.0(34.2–35.5) | 37.4(35.5–39.1) | < 0.001c |
Previous conditions | |||
History of previous CD | 189(86.3) | 79(65.8) | < 0.001a |
History of clinical confirmed PAS | 14(6.4) | 25(20.8) | < 0.001a |
History of endometrial ablation | 1(0.5) | 2(1.7) | 0.287d |
Previous uterine artery embolization for PPH | 7(3.2) | 6(5.0) | 0.395d |
History of myomectomy | 0(0.0) | 2(0.9) | NA |
History of operative hysteroscopy | 8(3.7) | 10(8.3) | 0.066a |
History of intrauterine adhesions (IUA) | 7(3.2) | 13(10.8) | 0.004a |
Dilation and evacuation of the uterus | 17(7.8) | 12(10.0) | 0.481a |
History of placenta previa | 11(5.0) | 11(9.2) | 0.139a |
Previous manual removal of placenta/placenta retention | 8(3.7) | 12(10.0) | 0.018a |