Liver pathology data

Source

Altman, D.G., Bland, J.M. (1994) ``Diagnostic tests 1: sensitivity and specificity,'' British Medical Journal, vol 308, 1552.

Value

pathology

a data frame

Details

These data have the results of a x-ray examination to determine whether liver is abnormal or not (in the scan column) versus the more extensive pathology results that approximate the truth (in pathology).

Examples

data(pathology)
str(pathology)
#> 'data.frame':	344 obs. of  2 variables:
#>  $ pathology: Factor w/ 2 levels "abnorm","norm": 1 1 1 1 1 1 1 1 1 1 ...
#>  $ scan     : Factor w/ 2 levels "abnorm","norm": 1 1 1 1 1 1 1 1 1 1 ...