For a woman with history of prior two molar pregnancies, the risk of having a third molar pregnancy is

For those with a prior complete mole, the risk of another mole is 0.9 percent. With a previous paial mole, the rate is 0.3 percentAfter two prior molar pregnancies, approximately 20 percent of women had a third moleReference: William's Obstetrics; 25th edition, chapter 20; Gestational trophoblastic diseases