Prognosis for the Infertile Couple

Weir, W. C.; Cicchinelli, Alexander L.

doi:10.1097/00006254-196508000-00028

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“…The time of entry was defined as the time of first semen analysis at our laboratory. We had no information about the exact duration of infertility before the first semen analysis, and this variable may be related to the fertility, as monovariate studies indicate (8,20,(34)(35)(36)(37)(38)(39)(40). The fertility of the femalepartner and the frequency of intercourse were not considered, but assumed comparable in groups compared.…”

Section: Acto Ohstet Gynecolmentioning

confidence: 99%

Prognostic parameters in predicting pregnancy: A twenty‐year follow‐up study comprising semen analysis in 765 men of infertile couples evaluated by the Cox regression model

Bostofte¹

1987

Acta Obstet Gynecol Scand

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The Cox proportional hazard regression model was employed on 765 infertile men whose semen had been analysed in 1950 and 1951 and who replied to a questionnaire 20 years later. Of nine clinical and laboratory variables evaluated, four possessed significant and independent prognostic information about the time required to conceive, when covariation between the variables was considered. They were: age of the man at semen analysis, percentage normal spermatozoa, percentage mobile spermatozoa, and the degree of motility. The four variables were combined to form a prognostic index, which permits prediction of individual pregnancy probability. The five variables which possessed no significant prognostic information were time from ejaculation to semen analysis, period of abstinence, existence of previous pregnancy, volume and sperm count. There was a satisfactory agreement between predicted and observed pregnancies in the present series. Thus, the index may prove clinically useful. However, its value must be established in other independent series.

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Section: Acto Ohstet Gynecolmentioning

confidence: 99%

Prognostic parameters in predicting pregnancy: A twenty‐year follow‐up study comprising semen analysis in 765 men of infertile couples evaluated by the Cox regression model

Bostofte¹

1987

Acta Obstet Gynecol Scand

View full text Add to dashboard Cite

show abstract

Prognosis for the Infertile Couple

Cited by 1 publication

References 0 publications

Prognostic parameters in predicting pregnancy: A twenty‐year follow‐up study comprising semen analysis in 765 men of infertile couples evaluated by the Cox regression model

Prognostic parameters in predicting pregnancy: A twenty‐year follow‐up study comprising semen analysis in 765 men of infertile couples evaluated by the Cox regression model

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