Aim: The purpose of the study was to examine the prevalence of spontaneous abortion in patients with polycystic ovary syndrome (PCOS) during follow-up. We also wanted to test the hypothesis that the miscarriage risk might not increase with age in PCOS. Methods: A study of women undergoing assisted reproductive treatment at a teaching hospital was done. We retrieved clinical records of all women with PCOS (n = 62) who conceived after assisted reproduction treatment. Pregnancy outcome was divided according to fetal viability. Prevalence of live birth and spontaneous abortion was also calculated according to diagnosis. Results: Prevalence of live birth was 61.29% in the PCOS cases. Prevalence of spontaneous abortion between gestational weeks 6 and 12 was 16.1 % in the PCOS group. The prevalence of spontaneous abortion during 6-12 weeks’ gestation does not increased significantly with age among women with PCOD. Conclusions: The prevalence of spontaneous abortion does not increase significantly with age up to 40 years in women with PCOS. This could be because of their greater ovarian reserve.