The gold standard answer for each case was determined
based on consensus between the final diagnosis on the case,
the principal investigator (MYL), and a board-certified radiologist
(TSC). Their distribution is detailed in Table 1.
The Likert scale of reader confidence was used to generate
receiver operating characteristic curves (ROCs) for both
readers using either film or smartphone capture for each disease
category using the MedCalc statistical package (MedCalc
Software, Ostend, Belgium). These were compared to one
another using the methodology of Delong et al. [13] using a
cutoff for statistical significance of p