the assessment of pregnancy outcome after infertility

objective: to compare the obstetric and neonatal outcome in women with and without a history of infertility. study design: a case-control study at four hospitals of tehran (selected randomly) between october 1st 1993 and february 20th 1994. subjects: 212 women with a history of infertility who reached 20 weeks gestation with a singleton live fetus and 212 control women matched for age and parity. main outcome measured: frequency of some antepartum complications. obstetric and neonatal outcome. variables: demographic variables, systemic diseases, history of last and present pregnancy. type and duration of infertility and kind of infertility treatment. results: sixty-one percent of study group were primery infertility patients and fifty-two percent of them had been pregnant after being treated. the incidence of the most complications was similar to that among controls. as compared with controls there was an increased incidence among study group of cesarian births (p<0.005), previous history of abortion (p<0.05), and history of vaginal bleeding in first and second trimesters of present pregnancy (p<0.005), and among primery infertility an increased incidence of preeclampsia (p<0.05)