| seizure {BCgee} | R Documentation |
Epiliptic Seizures
Description
The seizure data frame has 59 rows and 7 columns. 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.
Usage
data(seizure)Format
This data frame contains the following columns:
- y1
the number of epiliptic seizures in the 1st 2-week interval
- y2
the number of epiliptic seizures in the 2nd 2-week interval
- y3
the number of epiliptic seizures in the 3rd 2-week interval
- y4
the number of epiliptic seizures in the 4th 2-week interval
- trt
an indicator of treatment
- base
the number of epilitic seizures in a baseline 8-week interval
- age
a numeric vector of subject age
Source
Thall, P.F. and Vail S.C. (1990). Some covariance models for longitudinal count data with overdispersion, Biometrics, 46, 657–671.
Højsgaard, S., Halekoh, U. & Yan J. (2006). The R Package geepack for Generalized Estimating Equations, Journal of Statistical Software, 15, 1–11
References
Diggle, P.J., Liang, K.Y., and Zeger, S.L. (1994). Analysis of Longitudinal Data. Clarendon Press.
Examples
##see help page of function BCgee