Lower total motile count is associated with smaller historic intergenerational family size: a pedigree analysis from the Utah Population Database.
J Assist Reprod Genet
; 38(5): 1207-1213, 2021 May.
Article
em En
| MEDLINE
| ID: mdl-33629176
ABSTRACT
PURPOSE:
To describe the association between contemporary total motile count (TMC), a measure of male factor infertility, and historic intergenerational family size.METHODS:
This is a retrospective, population-based, cohort study of men who underwent semen analysis for infertility workup at University of Utah, with at least a single measure of TMC, who were linked to extensive genealogical data. Two thousand one hundred eighty-two pedigree branches of men with a measure of TMC within the UPDB were identified. We identified the average number of generations and offspring within each generation. Conditional logistic regression models were used to assess the association between the risk of having a TMC in the 5th or 25th percentile and intergenerational family size. Generalized estimating equations (GEE) were used to assess the association between interval-level TMC and the number of ancestral offspring.RESULTS:
We found no association between intergenerational size and TMC within the 5th percentile (TMC < 4 million; RR = 0.97, 95% CI 0.93-1.01) or the 25th percentile (TMC < 62 million; RR = 1.00, 95% CI 0.97-1.03). When TMC was analyzed as a continuous variable, we found that lower TMC is associated with smaller intergenerational family size. For every additional child in their ancestral pedigree, we observed an increase in TMC of 1.88 million (p = 0.03). Men in the top quartile for intergenerational family size had a TMC that was 48 million higher than men in the bottom quartile (p = 0.047).CONCLUSIONS:
We found an association between TMC and ancestral family size, suggesting that lower TMC is associated with smaller intergenerational family size.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Sêmen
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Motilidade dos Espermatozoides
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Espermatozoides
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Infertilidade Masculina
Tipo de estudo:
Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Child
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Humans
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Male
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Middle aged
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article