We thank Xiang Fang and colleagues for their interest in our Article.1 However, as already stated in the Article and by Fang and colleagues, a receiver operating characteristic (ROC) curve based on the data available in this study would be of questionable value and was thus not a predefined outcome measure included in the trial protocol. The reading data can be considered as binary: a recommendation to recall or not to recall the participant for further investigation. Because of this design, we would have been forced to base a ROC analysis on a single datapoint, which is essentially equivalent to fitting a curve to a single datapoint.
[Correspondence] One-view breast tomosynthesis vs two-view mammography: a methodological issue – Authors’ reply
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