This data set contains a subset of the data from the Copenhagen stroke
study.
Format
This data frame contains the observations of 518 stroke patients :
age
Age of the patients in years.
sex
A factor
with two levels female and male.
hypTen
Hypertension,
a factor with two levels no and yes.
ihd
History of
ischemic heart disease at admission, a factor with two levels no and
yes.
prevStroke
History of previous strokes before admission,
a factor with two levels no and yes.
othDisease
History of other disabling diseases (e.g. severe
dementia), a factor with two levels no and yes.
alcohol
Daily alcohol consumption, a factor with two levels no
and yes.
diabetes
Diabetes mellitus status indicating if the
glucose level was higher than 11 mmol/L, a factor with two levels no
and yes.
smoke
Daily smoking status, a factor with two levels
no and yes.
atrialFib
Atrial fibrillation, a factor
with two levels no and yes.
hemor
Hemorrhage (stroke
subtype), a factor with two levels no (infarction) and yes
(hemorrhage).
strokeScore
Scandinavian stroke score at admission to
the hospital. Ranges from 0 (worst) to 58 (best).
cholest
Cholesterol level
time
Survival time (in days).
status
Status (0: censored, 1: event).
References
Joergensen HS, Nakayama H, Reith J, Raaschou HO, and Olsen TS.
Acute stroke with atrial fibrillation. The Copenhagen Stroke Study. Stroke,
27(10):1765-9, 1996.
Mogensen UB, Ishwaran H, and Gerds TA. Evaluating random forests for
survival analysis using prediction error curves. Technical Report 8,
University of Copenhagen, Department of Biostatistics, 2010.