AG2P1 to female has a history of previous preterm bih at 32 weeks. The percentage chances of preterm bih in this pregnancy are:

Preterm labour is defined as spontaneous expulsion of the products of conception after bility and before 37 completed weeks.Prior preterm bih is a very good predictor of subsequent preterm labour.There is three fold increase in risk for these women (refer pgno:193 sheila textbook of obstetrics 2 nd edition)