aids {asbio}

Aids and veterans dataset

Description

The veterans administration studied the effect of AZT on AIDS symptoms for 338 HIV-positive military veterans who were just beginning to express AIDS. AZT treatment was withheld on a random component until helper T cells showed even greater depletion while the other group received the drug immediately. The subjects were also classified by race.

Usage

data(aids)

Format

A data frame with 338 observations on the following 3 variables.

race

A factor with levels black, white.

AZT

A factor with levels N, Y.

symptoms

Presence/absence of AIDS symptoms.

Source

Agresti, A. (2012) Categorical Data Analysis, 3rd edition. New York. Wiley.