thoro {Epi} | R Documentation |
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).
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 . |
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.
data(thoro) str(thoro)