Associated factors to pregnancy in intrauterine insemination

OBJECTIVE: To define the factors associated with clinical pregnancy after intrauterine insemination. METHODS: Retrospective study involving 633 infertility couples, which made up to 1053 cycles of intrauterine insemination. We analyzed the clinical pregnancy rate associated with different factors through the Chi-square test or Fisher's exact test. RESULTS: The clinical pregnancy rate was 8.2% per insemination cycle and 13.6% per treated couple. The factors with greater association to clinical pregnancy were to have more than two follicles, to perform the procedure without difficulty, to have 3 years or less of infertility, cervical factor as indication, use of gonadotropins and age less than 38 years. CONCLUSION: Intrauterine insemination requires to be accompanied by proper selection and couples' preparation.