dataset14 {RJafroc}

Federica Zanca real (as opposed to inferred) ROC dataset

Description

This is referred to in the book as the "FZR" dataset. It is a real ROC study, conducted on the same images and using the same radiologists, on treatments "4" and "5" of dataset04. This was compared to highest rating inferred ROC data from dataset04 to conclude, erroneously, that the highest rating assumption is invalid. See book Section 13.6.2.

Usage

dataset14

Format

A list with 3 elements: $ratings, $lesions and $descriptions; $ratings contain 3 elements, $NL, $LL and $LL_IL as sub-lists; $lesions contain 3 elements, $perCase, $IDs and $weights as sub-lists; $descriptions contain 7 elements, $fileName, $type, $name, $truthTableStr, $design, $modalityID and $readerID as sub-lists;

• rating$NL, num [1:2, 1:4, 1:200, 1], ratings of non-lesion localizations, NLs

• rating$LL, num [1:2, 1:4, 1:100, 1], ratings of lesion localizations, LLs

• rating$LL_ILNA, this placeholder is used only for LROC data

• lesions$perCase, int [1:100], number of lesions per diseased case

• lesions$IDs, num [1:100, 1] , numeric labels of lesions on diseased cases

• lesions$weights, num [1:100, 1], weights (or clinical importances) of lesions

• descriptions$fileName, chr, "dataset14", base name of dataset in 'data' folder

• descriptions$type, chr "ROC", the data type

• descriptions$name, chr "FEDERICA-REAL-ROC", the name of the dataset

• descriptions$truthTableStr, num [1:2, 1:4, 1:200, 1:2], truth table structure

• descriptions$design, chr "FCTRL", study design, factorial dataset

• descriptions$modalityID, chr [1:2] "4" "5", treatment label(s)

• descriptions$readerID, chr [1:4] "1" "2" "3" "4", reader labels

References

Zanca F, Hillis SL, Claus F, et al (2012) Correlation of free-response and receiver-operating-characteristic area-under-the-curve estimates: Results from independently conducted FROC/ROC studies in mammography. Med Phys. 39(10):5917-5929.

Examples

str(dataset14)