The repeated measures data from the "Six Cities" study of the health effects of air pollution (Ware et al. 1984).

The data analyzed are the 16 selected cases in Lipsitz et al. (1994). The binary response is the wheezing status of 16 children at ages 9, 10, 11, and 12 years. A value of 1 of wheezing status indicates the occurrence of wheezing. The explanatory variables city of residence, age, and maternal smoking status at the particular age.

Usage

six

Format

An object of class tbl_df (inherits from tbl, data.frame) with 64 rows and 6 columns.

Details

case: case id
city: city of residence
age: age of the child
smoke: maternal smoking status
wheeze: wheezing status