The dataset has the number of epiliptic seizures in each of four two-week intervals,and in a baseline eight-week inverval, for treatment and control groups with a total of 59 individuals.
This data frame contains the following columns:
the number of epiliptic seizures in the 1st 2-week interval
the number of epiliptic seizures in the 2nd 2-week interval
the number of epiliptic seizures in the 3rd 2-week interval
the number of epiliptic seizures in the 4th 2-week interval
an indicator of treatment
the number of epilitic seizures in a baseline 8-week interval
a numeric vector of subject age
Thall, P.F. and Vail S.C. (1990) Some covariance models for longitudinal count data with overdispersion. Biometrics 46: 657–671.
Diggle, P.J., Liang, K.Y., and Zeger, S.L. (1994) Analysis of Longitudinal Data. Clarendon Press.
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