AIDS.DT {DTDA}

AIDS Blood Transfusion Data, doubly truncated

Description

The data include information of transfusions cases of transfusion-related AIDS, corresponding to individuals diagnosed prior to July 1, 1986. Only 295 patients with consistent data, for which the infection could be attributed to a single transfusion or short series were included. Since HIV was unknown before 1982, this implies that cases developing AIDS prior to this date were not reported, leading to a doubly truncated data. The incubation time is doubly truncated due to the interval sampling.

Usage

data(AIDS.DT)

Format

A data frame with 295 observations on the following 4 variables.

X

a numeric vector, the induction or incubation time: time elapsed from HIV infection to AIDS (in months).

U

a numeric vector, time from 1982 to HIV infection (in months).

V

a numeric vector,time from HIV infection to July 1, 1986 (in months).

AGE

a numeric vector, age of the individual at infection (in years).

References

Kalbfleisch JD and Lawless JF (1989) Inference based on retrospective ascertainment: An analysis of the data on transfusion-related AIDS. Journal of the American Statistical Association 84, 360–372.

Examples

data(AIDS.DT)
str(AIDS.DT)