The response vector consists of quarterly numbers of hospital visits over a one year period for a child age at four or younger, and three baseline covariates are age, sex, and maternal smoking status. The sample size of this study is \(n=73\) children.
data(childvisit)A data frame with 292 observations on the following 6 variables.
idThe child ID.
ageThe age in months.
sexThe sex indicator.
matsmstThe maternal smoking status.
quarterThe time indicator.
hospvisThe response vector of quarterly numbers of hospital visits.