thoro {Epi}

Thorotrast Study

Description

The thoro data frame has 2470 rows and 14 columns. Each row represents one patient that have had cerebral angiography (X-ray of the brain) with an injected contrast medium, either Thorotrast or another one (the controls).

Format

This data frame contains the following columns:

id

Identification of person.

sex

Sex, 1: male / 2: female.

birthdat

Date of birth, Date variable.

contrast

Group, 1: Thorotrast / 2: Control.

injecdat

Date of contrast injection, Date variable.

volume

Injected volume of Thorotrast in ml. Control patients have a 0 in this variable.

exitdat

Date of exit from the study, Date variable.

exitstat

Status at exit, 1: dead / 2: alive, censored at closing of study, 20 February 1992 / 3: censored alive at some earlier date.

cause

Cause of death. See causes in the helpfile for gmortDK.

liverdat

Date of liver cancer diagnosis, Date variable.

liver

Indicator of liver cancer diagnosis. Not all livercancers are histologically verified, hence liver >= hepcc + chola + hmang

hepcc

Hepatocellular carcinoma at liverdat.

chola

Cholangiocellular carcinoma at liverdat.

hmang

Haemangisarcoma carcinoma at liverdat.

Source

M Andersson, M Vyberg, J Visfeldt, B Carstensen & HH Storm: Primary liver tumours among Danish patients exposed to Thorotrast. Radiation Research, 137, pp. 262–273, 1994.

M Andersson, B Carstensen HH Storm: Mortality and cancer incidence after cerebral angiography. Radiation Research, 142, pp. 305–320, 1995.

See Also

mortDK, gmortDK

Examples

data(thoro)
str(thoro)