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.

HÃ¸jsgaard, 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

[Package

*BCgee* version 0.1

Index]