Nick examines the problem of testing for linkage between a disease susceptibility locus and a marker locus for sib-pair data. Given a specified simple alternative for the parameters (pO, p I , p 2 ) of the multinomial distribution of (NO, N , , N2), where Nj denotes the number of sibs sharing exactl
Improved sib-pair linkage test for disease susceptibility loci
β Scribed by Julian J. Faraway
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 394 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0741-0395
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β¦ Synopsis
Abstract
An improved sibβpair test for linkage is introduced which is superior to the previously proposed tests. The test is derived from the standard chiβsquared goodness of fit statistic by restricting the alternative hypothesis to the genetically possible. Critical values are given and exact power comparisons are made with the previously proposed tests. The new test is shown to be more powerful for finite samples as well as being asymptotically uniformly most powerful. Β© 1993 WileyβLiss, Inc.
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