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假設這個簡單的例子:造型beta-二項式迴歸
treatment <- factor(rep(c(1, 2), c(43, 41)), levels = c(1, 2),labels = c("placebo", "treated"))
improved <- factor(rep(c(1, 2, 3, 1, 2, 3), c(29, 7, 7, 13, 7, 21)),levels = c(1, 2, 3),labels = >c("none", "some", "marked"))
numberofdrugs<-rpois(84, 50)+1
healthvalue<-rpois(84,5)
y<-data.frame(healthvalue,numberofdrugs, treatment, improved)
test<-lm(healthvalue~numberofdrugs+treatment+improved, y)
我是什麼supossed辦時,我想估計有Rβ-二項式迴歸?有人熟悉它嗎?任何想法是讚賞!
你好!感謝您的意見。我不確定是否需要「總數」。爲了更好地理解讀者,這裏有一個類似的討論:http://stats.stackexchange.com/questions/11876/fitting-a-beta-binomial-model-in-the-case-of-overdispersion-in-r – user734124 2011-06-14 05:52:49