cost {pec}

Copenhagen Stroke Study

Description

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.