Table 3 Preoperative risk factors for placenta accreta spectrum

Age*

35.7 ± 7.14

36.0 ± 4.6

History of cesarean section**

1 (16)

2 (33)

0.809

Abortion**

2 (33)

1 (16)

0.191

History of intrauterine curettage**

2 (33)

1 (16)

0.191

ART**

4 (67)

4 (67)

0.438

History of placental delivery difficulty**

1 (16)

1 (16)

0.104

History of SLE**

1 (16)

1 (16)

0.104

Pre-pregnancy uterine cavity length is less than 5 cm**

2 (33)

0 (0)

0.039