R: Ordinal Data from Koch

koch {geepack} | R Documentation

## Ordinal Data from Koch

### Description

The `koch` data frame has 288 rows and 4 columns.

### Usage

    koch

### Format

This data frame contains the following columns:

trt

  a numeric vector

day

  a numeric vector

y

  an ordered factor with levels: `1` < `2` < `3`

id

  a numeric vector

### Examples

    data(koch)
    fit <- ordgee(ordered(y) ~ trt + as.factor(day), id=id, data=koch, corstr="exch")
    summary(fit)

[Package geepack version 1.3-1 Index]