R: Copenhagen Stroke Study

cost {pec} | R Documentation

## 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.

[Package pec version 2022.03.06 Index]