RESUMO
The aim of the study was to determine the risk factors of ectopic pregnancy (EP) and to compare them between women over and under 20 years of age. 308 cases of EP (case group) were compared with 616 cases of normal pregnancy. Smoking [Ad OR =5.7 (CI 95%=2.8-11.6), p < 0.001], previous EP [Ad OR= 11.4 (CI 95%=3-42.4), p = 0.000], previous STD [Ad OR =3.2 (CI 95%=2.1-4.9), p < 0.001], previous use of IUD [Ad OR =4.1 (CI 95%=2.1-8), p < 0.001], history of infertility [Ad OR= 1.8 (CI 95%=1.1-3), p = 0.01], previous caesarean delivery [Ad OR= 1.5 (CI 95%=1.1-2.3), p = 0.03] and consanguinity [Ad OR =2.2 (CI 95%=1.3-3.6), p = 0.002] were considered as risk factors for EP. Prior abortion [p = 0.000], prior STD [p = 0.004], previous caesarean delivery [p = 0.000] and consanguinity [p = 0.04] were more in the >20-year-old group. Negative Rh [p = 0.02], good economic status [p = 0.000] and prior STD [p = 0.03] were more common in Afghan women. However, previous caesarean delivery [p = 0.04] was more in Iranian women. Smoking, previous EP, history of STD, IUD, infertility, previous caesarean delivery and consanguinity are all risk factors for EP.