vitcap function

Vital capacity

The vitcap data frame has 24 rows and 3 columns. It contains data on vital capacity for workers in the cadmium industry. It is a subset of the vitcap2 data set.

vitcap

Format

This data frame contains the following columns:

• group: a numeric vector; group codes are 1: 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) in liters.

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=vitcap)