predprob.zeroinfl {pscl} | R Documentation |
Produces predicted probabilities of counts from a zero-inflated regression models
## S3 method for class 'zeroinfl': predprob(obj,...)
obj |
a fitted object of class inheriting from "zeroinfl" |
... |
additional arguments to be passed to predict.zeroinfl
|
Calls predict.zeroinfl
with the option type="prob"
See predict.zeroinfl
Simon Jackman <jackman@stanford.edu>
data(bioChemists) zip <- zeroinfl(count=art ~ ., x = ~ fem + mar + kid5 + phd + ment, z = ~ fem + mar + kid5 + phd + ment, dist="poisson", data=bioChemists,trace=TRUE) ## zero-infl poisson phat <- predprob(zip) newdata <- expand.grid(list(fem="Men",mar="Married", kid5=1,phd=3.103, ment=0:77)) phat <- predprob(zip,newdata=newdata)