Continuous versus categorical data for ROC analysis: some quantitative considerations
RF Wagner, SV Beiden, CE Metz - Academic radiology, 2001 - Elsevier
RATIONALE AND OBJECTIVES: Several authors have encouraged the use of a quasi-
continuous rating scale for data collection in receiver operating characteristic (ROC) curve
analysis of diagnostic modalities, rather than rating scales based on five to seven ordinal
categories or levels of suspicion. Although many investigators have gone over to this
method, a discussion of the issues continues. The present work provides a quantitative
analysis from the viewpoint of measurement science. MATERIALS AND METHODS: A …
continuous rating scale for data collection in receiver operating characteristic (ROC) curve
analysis of diagnostic modalities, rather than rating scales based on five to seven ordinal
categories or levels of suspicion. Although many investigators have gone over to this
method, a discussion of the issues continues. The present work provides a quantitative
analysis from the viewpoint of measurement science. MATERIALS AND METHODS: A …
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