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 ...