ANALYSIS OF EMBRYONIC-DEVELOPMENT WITH A MODEL FOR UNDERDISPERSION OR OVERDISPERSION RELATIVE TO BINOMIAL VARIATION

被引：10

作者：

ENGEL, B ^{[1
]}

TEBRAKE, J ^{[1
]}

机构：

[1] RES INST ANIM PROD SCHOONOORD, 3700 AM ZEIST, NETHERLANDS

来源：

BIOMETRICS | 1993年 / 49卷 / 01期

关键词：

BETA-BINOMIAL DISTRIBUTION; BETA-CORRELATED-BINOMIAL DISTRIBUTION; CORRELATED BINOMIAL LOGISTIC MODEL; EMBRYONIC DEVELOPMENT RATE; EXTRA-BINOMIAL VARIATION; MAXIMUM QUASILIKELIHOOD; OVERDISPERSION; OVULATIONS; UNDERDISPERSION; WILLIAMS MODEL-II;

D O I：

10.2307/2532622

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Observations from a study of the development of ovulations into embryos for Texel sheep are analysed with a model for count data that are under- or overdispersed relative to binomial variation. The analysis is based on maximum quasi-likelihood (McCullagh and Nelder, 1989, Generalized Linear Models, 2nd edition, London: Chapman and Hall), following an approach suggested by Williams (1982, Applied Statistics 31, 144-148). The dispersion parameter is developed as a combination of a variance component representing shared maternal effects and a correlation, typically negative, between ovulations within ewes. The number of ovulations (the binomial denominator) is included as an explanatory variable.

引用

页码：269 / 279

页数：11

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