Pregnancy successes in the infertile couple.

Three hundred sixteen pregnancies achieved in infertile couples attending Chelsea Hospital for Women, London, during a 2-year period are analysed (31% of total clinic attendance). Almost half the patients tested had ovulation defects, but in 11.4% more than one factor was present. Although 22.4% and 33.9% were apparently successfully treated for male and ovulation problems, respectively, and in 8.2% multiple therapy was undergone, in 33.4% success could not be attributed to any form of therapy. Chance of pregnancy diminish with time but seasonal fluctuation was noted in the pregnancies achieved. Eighty-three percent proceeded to live delivery.