Infertility: Life table analysis of pregnancy rates in a general infertility population relative to ovarian reserve and patient age*

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Abstract
This study evaluated the impact of age and ovarian reserve status on cumulative pregnancy rates. Approximately 1200 women from a general infertile population underwent ovarian reserve screening with the clomiphene citrate challenge test in the first few months of their initial evaluation. All patients then underwent a thorough infertility evaluation with therapy appropriate for their specific diagnoses. Patients with evidence of tubal disease, peritoneal adhesive disease, or male factor were eliminated. The 588 remaining patients were evaluated based on their age and ovarian reserve status, and their long-term pregnancy rates were compared using life table analyses. There was a dramatic decrease in pregnancy rates associated with an abnormal clomiphene citrate challenge test which was uniformly poor independent of age. Patients with normal ovarian reserve had much higher pregnancy rates, but a significant age-related decline in pregnancy rates was clearly identified. We conclude that women with evidence of diminished ovarian reserve have uniformly poor pregnancy rates independent of their age, but that age remains an important prognostic factor among those with a normal ovarian reserve. The combined use of maternal age and ovarian reserve screening should be used when counselling individual patients regarding their long-term prognoses for conception.

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