R: Vital capacity, full data set

vitcap2 {ISwR} | R Documentation

## Vital capacity, full data set

### Description

The `vitcap2` data frame has 84 rows and 3 columns. Age and vital capacity for workers in the cadmium industry.

### Usage

    vitcap2

### Format

This data frame contains the following columns:

`group`

  a numeric vector; group codes are 1: exposed > 10 years, 2: exposed < 10 years, 3: not exposed.

`age`

  a numeric vector, age in years.

`vital.capacity`

  a numeric vector, vital capacity (a measure of lung volume) (l).

### Source

P. Armitage and G. Berry (1987), Statistical Methods in Medical Research, 2nd ed., Blackwell, p.286.

### Examples

    plot(vital.capacity~age, pch=group, data=vitcap2)

[Package ISwR version 2.0-7 Index]