aneurism.data {survBayes}R Documentation

Shrinkage of aneurisms

Description

Data on the shrinkage of aneurisms associated with cerebral arteriovenous malformations (cAVM) after treatment. The time to a shrinkage of the aneurism to below 50% of the baseline volume was of interest. There is one random inspection time (current status). The data is given in interval notation. Several patients had multiple aneurisms.

Usage

data(aneurism.data)

Format

A data frame with 149 observations on the following 6 variables.

left
time of the begin of the interval
right
time of the end of the interval
cens
censoring variable
mo
the degree of cAMV occlusion by embolization (dichotomized at 50% )
loc
the location of the aneurism, whether at the midline arteries or at other afferent cerebral arteries
gr
The single aneurisms are not independent because aneurisms within a patient may shrink in the same way. Multiple aneurisms were observed per patient. This clustering of aneurisms is indicated by this grouping variable.

Source

H.~J. Meisel, U.~Mansmann, H.~Alvarez, G.~Rodesch, M.~Brock, and P.~Lasjaunias. Cerebral arteriovenous malformations and associated aneurysms: Analysis of 305 cases from a series of 662 patients. {em Neurosurgery}, 46:793–802, 2000.

Examples

data(aneurism.data)

[Package survBayes version 0.2.1.1 Index]