vitcap2: Vital capacity, full data set

In ISwR: Introductory Statistics with R

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)

Example output

ISwR documentation built on Jan. 20, 2020, 5:07 p.m.