ohio | R Documentation |
The dataset is a subset of the six-city study, a longitudinal study of the health effects of air pollution.
data(ohio)
The ohio data frame has 2148 rows and 4 columns
respan indicator of wheeze status (1=yes, 0=no).
ida numeric vector for subject id.
agea numeric vector of age, 0 is 9 years old
smokean indicator of maternal smoking at the first year of the study
Fitzmaurice, G.M. and Laird, N.M. (1993) A likelihood-based method for analyzing longitudinal binary responses, Biometrika 80: 141–151.
data(ohio)
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