Description Usage Format Source References Examples
This data set consider respiratory infection information of 250 indonesian children reported by Sommer, Katz, and Tarwotjo (1984). The children, all preschoolers, were seen quarterly for up to six quarters. At each examination, the presence or absence of respiratory infection was noted.
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A data frame with 1200 observations on the following 9 variables.
idan ordered factor giving a unique identifier for the subject in the study.
gendera numeric vector giving the gender.
heighta numeric vector giving the height for age as a percentage of the National Center for Health Statitics standard centered at 90.
cosva numeric vector giving the seasonal cosine for the annual cycle.
sinva numeric vector giving the seasonal sine for the annual cycle.
xeroa numeric vector giving the presence (1) or absence (0) of xeropthalmia.
baseagea numeric vector giving the age at the entry.
agea numeric vector giving the age of the child in months centered at 36
infecta numeric vector giving the presence (1) or absence (0) of respiratory infection.
Sommer, A., Katz, J., and Tarwotjo, I. (1984) Increased risk of respiratory infection and diarrhea in children with pre-existing mild vitamin A deficiency, American Journal of Clinical Nutrition, 40: 1090-1095.
Zeger, S.L., and Karim, M.R. (1991) Generalized linear models with random effects: A Gibbs sampling approach. Journal of the American Statistical Association, 86: 79-86.
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