Risk factors

Placenta previa is more common among women who:

• Have had a baby
• Have scars on the uterus, such as from previous surgery, including cesarean deliveries, uterine fibroid removal, and dilation and curettage
• Had placenta previa with a previous pregnancy
• Are carrying more than one fetus
• Are age 35 or older
• Are of a race other than white
• Smoke
• Use cocaine