deepvein {shrink} | R Documentation |
Deep Vein Thrombosis Study
Description
A data frame containing time to recurrence of thrombosis and several potential prognostic factors measured at baseline for 929 individuals with deep vein thrombosis or unprovoked pulmonary embolism. 147 events of recurrence were observed during a median follow-up time of 37.8 months.
Usage
deepvein
Format
The data frame contains observations of 929 individuals and the following variables:
- pnr
patient number.
- time
time to recurrence of thrombosis or end of study in months.
- status
= 1 recurrence of thrombosis.
- sex
gender.
- fiimut
factor II G20210A mutation.
- fvleid
factor V Leiden mutation.
- log2ddim
log2-transformed D-dimer.
- bmi
body mass index.
- durther
duration of anticoagulation therapy.
- age
age in years.
- loc
location of first thrombosis: pulmonary embolism (PE), distal, or proximal deep vein
thrombosis.
Note
The data are a modified and partly simulated version of the data set used by Eichinger et al. (2010) and are available under a GPL-2 license.
References
M. Schumacher, G. Basert, H. Bojar, K. Huebner, M. Olschewski,
W. Sauerbrei, C. Schmoor, C. Beyerle, R.L.A. Neumann and H.F. Rauschecker
for the German Breast Cancer Study Group (1994).
Randomized 2 \times 2
trial evaluating hormonal treatment
and the duration of chemotherapy in node-positive breast cancer patients.
Journal of Clinical Oncology, 12, 2086–2093.
W. Sauerbrei and P. Royston (1999). Building multivariable prognostic
and diagnostic models: transformation of the predictors by using
fractional polynomials. Journal of the Royal Statistics Society
Series A, Volume 162(1), 71–94.
Examples
data("deepvein")
summary(deepvein)