Abstract
Background and Objectives: Infertility is defined as failure in pregnancy after one year of unprotected intercourse. The most common causes of infertility reported in different researches are including male factor, female factor, both male and female factor and unexplained infertility. The aim of this study was to survey the epidemiology of infertility in Royan Institute.
Materials and Methods: In this descriptive study, 2492 infertile couples were studied. These couples were selected by systematic sampling among couples referred to Royan Institute between 1995 and 2001. Demographic data and diagnostic methods which were existed in files, were recorded in questionnaires. Results were analyzed by SPSS version 11.5.
Results: In this study, the frequency of primary and secondary infertility was 90.1% and 9.9%, respectively. Among 2492 couples, 50.5% had male factor, 28.6% had female factor, 11.6%had both male and female factors and in 9.3% of couples, the cause of infertility was unknown. Results showed that 32.3% of men had normal spermogram, 23.6% of men were azospermia, 40.3% had sperm disturbance and 3.8% were not able to collect sample for semen analysis. Among women, different infertility factors included: ovarian factor (20.36%), tubal factor (12.64%), uterine factor (4.13%), endometriosis (1.28%), recurrent abortion (0.68%) and 50.48% of women were normal.
Conclusion: Although male infertility is the most common cause of infertility in Royan Institute, we could not conclude that male infertility is the most common cause of infertility in Iran because Royan Institute is a referral center especially for male infertility. We suggest to Conduct similar researches in other centers of infertility in Iran to evaluate the most common cause of infertility.