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carddrg
2003 Oct 24
2
predict for a model with a subset
Hello
running R 1.7.1 on Windows 2000
I have a model
notmar1 <- glm(yprisx~age+harddrug+sex, subset = marcom == 0,
family = quasipoisson)
and summary(notmar1) gives (as it should) 433 df for the null model
but when I run
predict(notmar1 <- glm(yprisx~age+harddrug+sex, subset = marcom == 0,
family = quasipoisson))
I get preditions for 528 people (the full data set, not the subs...