What is a common risk factor for developing placenta accreta?

Multiparity, which refers to having had multiple pregnancies, is a common risk factor for developing placenta accreta. This condition occurs when the placenta attaches too deeply into the uterine wall, potentially causing complications during delivery. The increased number of previous pregnancies may lead to changes in the uterine lining, making it more susceptible to abnormal placentation in subsequent pregnancies.

Factors such as obesity and smoking do have implications for overall pregnancy health but are not specifically tied to the incidence of placenta accreta in the same direct manner as multiparity. A history of preterm labor is typically indicative of other obstetric issues and does not have a strong association with the likelihood of placenta accreta. Therefore, the relationship between multiparity and placenta accreta is well-documented in obstetric literature, making it the most appropriate choice in this context.