amlxray {faraway}R Documentation

Match pair study for AML and Xray link

Description

A matched case control study carried out to investigate the connection between X-ray usage and acute myeloid leukemia in childhood. The pairs are matched by age, race and county of residence.

Usage

data(amlxray)

Format

A data frame with 238 observations on the following 11 variables.

ID
a factor denoting the matched pairs
disease
0=control, 1=case
Sex
F or M
downs
Presence of Downs syndrome: no or yes
age
Age in years
Mray
Did the mother ever have an Xray: no or yes
MupRay
Did the mother have an Xray of the upper body during pregnancy: no or yes
MlowRay
Did the mother have an Xray of the lower body during pregnancy: no or yes
Fray
Did the father ever have an Xray: no or yes
Cray
Did the child ever have an Xray: no or yes
CnRay
Total number of Xrays of the child 1=none < 2=1 or 2 < 3=3 or 4 < 4= 5 or more

Source

Chap T. Le (1998) "Applied Categorical Data Analysis" Wiley.


[Package faraway version 1.0.4 Index]