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  • Title: Use of semen quality scores to predict pregnancy rates in couples undergoing intrauterine insemination with donor sperm.
    Author: Allamaneni SS, Bandaranayake I, Agarwal A.
    Journal: Fertil Steril; 2004 Sep; 82(3):606-11. PubMed ID: 15374703.
    Abstract:
    OBJECTIVE: To establish semen quality scores in a population of sperm donors and determine whether the scores can be used to predict pregnancy rates after donor insemination. DESIGN: Retrospective study. SETTING: Infertility clinic at a tertiary care teaching hospital between 1993-2001. PATIENT(S): One hundred eleven women who underwent IUI with sperm from 27 anonymous donors. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): The semen analysis results before freezing and after thawing were analyzed, and overall donor insemination semen quality (DI-SQ) and donor insemination relative quality (DI-RQ) scores were calculated. After adjusting for female characteristics, the scores were compared with samples that did and did not result in pregnancy. RESULT(S): Of 111 patients, 70 had at least one pregnancy, and 60 had at least one live birth, with a mean of 6.52 +/- 4.67 IUI cycles per patient. Five significant risk factors for low pregnancy and live birth rates were identified: female infertility factor, positive laparoscopy, older maternal age, low number of previous births, and lack of ovulatory stimulation. After adjusting for these factors, both prefreeze and postthaw DI-SQ scores were statistically significantly associated with IUI live birth rates. Using only the samples with a DI-SQ score of >110 doubled the expected live birth rate, compared with using samples with a DI-SQ score less than 100, from 8.5% to 16.1%. CONCLUSION(S): The DI-SQ score was an effective predictor of pregnancy and live birth outcomes in IUI patients who underwent artificial insemination with anonymous donor semen. The DI-SQ score could also be used by sperm banks to help select donors.
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