Algorithms of likelihood ratio for discriminating full sibling from half sibling / 法医学杂志
Journal of Forensic Medicine
;
(6): 104-108, 2012.
Artigo
em Chinês
| WPRIM
| ID: wpr-983721
ABSTRACT
OBJECTIVE@#To derive the formulae for likelihood ratio calculation in discriminating full sibling from half sibling with single-parent participation or without parent participation.@*METHODS@#Null hypothesis and alternative hypothesis were established for discriminating full sibling from half sibling in two circumstances two children with single-parent and without parent participation. Conditional probabilities of the genetic evidentiary under null and alternative hypotheses were calculated according to the Bayesian theory. The likelihood ratios were established with the conditional probability under alternative hypothesis division that under null hypothesis, followed with simplification. All the formulae were validated in a real case.@*RESULTS@#While mother or fathers' genetic information available in differentiating full sibling from half sibling, 14 different genotype combinations could be shared by the two detected children at a given locus and the likelihood ratio could be calculated with 5 different formulae respectively. While both parents' genetic information unavailable, 11 different genotype combinations could be shared and the likelihood ratio could be calculated with 7 different formulae respectively. It was validated in a real case that the power of the likelihood ratio method developed for discriminating full sibling from half sibling with single-parent participation was higher than that of the ratio of full sibling index over half sibling index.@*CONCLUSION@#The formulae of likelihood ratio developed are useful for discriminating full sibling from half sibling with single-parent participation or without parent participation.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Pais
/
Algoritmos
/
Funções Verossimilhança
/
Teorema de Bayes
/
Sequências de Repetição em Tandem
/
Cromossomos Humanos X
/
Irmãos
/
Alelos
/
Genética Forense
/
Genótipo
Limite:
Criança
/
Feminino
/
Humanos
Idioma:
Chinês
Revista:
Journal of Forensic Medicine
Ano de publicação:
2012
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS