Derivation of new mathematic formulas for determining whether a D-positive father is heterozygous or homozygous for the D antigen.
Am J Obstet Gynecol
; 166(1 Pt 1): 61-3, 1992 Jan.
Article
em En
| MEDLINE
| ID: mdl-1733220
ABSTRACT
OBJECTIVES:
This article derives new mathematic formulas to calculate the probability that the husband of a D-negative woman is heterozygous for the D antigen. STUDYDESIGN:
Current published formulas and tables that estimate this probability are biased in that they incorrectly assume that the father is randomly selected from the general population. With Bayes' theorem, new formulas were derived to eliminate this bias.RESULTS:
The probability of the husband being homozygous or heterozygous for the D antigen can be expressed as a function of the number of previous D-positive children. If he has any D-negative children, he is an obligate heterozygote.CONCLUSION:
Previously published formulas and tables that estimate the likelihood of the father being heterozygous or homozygous at the D locus should no longer be used in the obstetric setting.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sistema do Grupo Sanguíneo Rh-Hr
/
Pai
/
Triagem de Portadores Genéticos
Limite:
Humans
/
Male
Idioma:
En
Ano de publicação:
1992
Tipo de documento:
Article