... group). And then they are com-pared to each other. Logistic regression was used to control for confounding factors. Results: In the anterior group, regardless of confounding factors, the incidence ... According to Placental Position in Placental Previa Dong Gyu Jang, Ji Sun We, Jae Un Shin, Yun Jin Choi, Hyun Sun Ko, In Yang Park, Jong Chul Shin Department of Obstetrics and Gynecology, ... that high inci-dence of placental accreta in the anterior group af-fected the increased the risk of massive transfusion and hysterectomy. Further prospective studies including other so-nographic...