seizures {DPpackage} | R Documentation |
This data set consider information from a clinical trial of 59 epileptics, reported by Thall and Vail (1990). For each patient, the number of epileptic seizures was recorded during a baseline period of eight weeks. Patients were then randomized to treatment with the anti-epileptic drug progabide, or to aplacebo in addition to standard chemotherapy. The number of seizures was then recorded in four consecutive two-weeks intervals.
data(seizures)
A data frame with 295 observations on the following 5 variables.
id
seize
visit
trt
age
Thall, P.F., and Vail, S.C. (1990) Some covariance models for longitudinal count data with ovserdispersion, Biometrics, 46: 657-671.
Diggle, P.J., Liang, K-Y., and Zeger, S.L. (1994) Analysis of longitudinal data. Oxford: Clarendon Press.
data(seizures) ## maybe str(seizures) ; plot(seizures) ...