glasses {gamlss.data}

Reading Glasses Data

Description

The Blue Mountains Eye Study.

Usage

data("glasses")

Format

A data frame with 1016 observations on the following 3 variables.

age

The age of the participants in the Blue Mountains Eye Study

sex

the gender of the participants, a factor with levels 1=‘male’ 2=‘female’.

ageread

the age in which reading glasses were required.

References

Attebo, Karin, Paul Mitchell, and Wayne Smith (1996). "Visual acuity and the causes of visual loss in Australia: the Blue Mountains Eye Study." Ophthalmology 103.3:pp 357-364.

Examples

data(glasses)
plot(ageread~sex, data=glasses)