radiologist: Classification by two radiologists of 85 xeromammograms as...

In emilelatour/lagree: Calculate various interrater agreement coefficients

Classification by two radiologists of 85 xeromammograms as normal, benign disease, suspicion of cancer, or cancer

Description

Classification by two radiologists of 85 xeromammograms as normal, benign disease, suspicion of cancer, or cancer (a subset of the data from Boyd et al. (1982) and discussed in the context of kappa in Altman (1991, 403–405).

Usage

radiologist

Format

A tibble with 85 observations (Normal, Benign, Suspect, Cancer) on 2 variables representing different raters.

radiologist_a

ratings of Radiologist a (see levels above)

radiologist_b

ratings of Radiologist b (see levels above)

Source

Boyd, N. F., C. Wolfson, M. Moskowitz, T. Carlile, M. Petitclerc, H. A. Ferri, E. Fishell, A. Gregoire, M. Kiernan, J. D. Longley, I. S. Simor, and A. B. Miller. 1982. Observer variation in the interpretation of xeromammograms. Journal of the National Cancer Institute 68: 357–363.

Datasets for Stata Base Reference Manual, Release 13

References

Altman, D. G. 1991. Practical Statistics for Medical Research. London: Chapman & Hall/CRC

Examples

radiologist

library(dplyr)
library(tidyr)
radiologist %>%
  with(., table(radiologist_a, radiologist_b)) %>%
  addmargins()

emilelatour/lagree documentation built on Sept. 18, 2024, 5:19 p.m.