ASP--a simulation-based power calculator for genetic linkage studies of qualitative traits, using sib-pairs.

Abstract:

:An easy-to-use, simulation-based power calculator (ASP) for linkage analysis using sib-pair designs (concordant or discordant) has been developed and made publicly available via the Internet. The program employs a diallelic model for the trait locus, at which parental/offspring genotypes are simulated, assuming Hardy-Weinberg equilibrium in the parental generation. Genotypes at a linked multiallelic marker locus are simulated conditional upon the inheritance pattern at the trait locus, allowing for recombination. Marker genotypes are tested for non-Mendelian identity-by-descent sharing, using both an unrestricted and a restricted likelihood ratio test, the latter representing an extension of the "mean test" from fully to partially informative families. The power of user-defined datasets is estimated by the number of simulations giving significant results at varying type I error levels.

journal_name

Hum Genet

journal_title

Human genetics

authors

Krawczak M

doi

10.1007/s00439-001-0634-x

keywords:

subject

Has Abstract

pub_date

2001-12-01 00:00:00

pages

675-7

issue

6

eissn

0340-6717

issn

1432-1203

journal_volume

109

pub_type

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