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Receiver operating characteristic (ROC) curve analysis for the critical shoulder angle (CSA). (A) ROC analysis showed that for the whole cohort, the area under the curve (AUC) of the CSA was 0.812 in radiographs and 0.815 in 3D‐CT. (B) ROC analysis showed that for patients aged <45 years, the AUC of the CSA was 0.743 in radiographs and 0.731 in 3D‐CT. (C) ROC analysis showed that for patients aged ≥45 years, the AUC of the CSA was 0.869 in radiographs and 0.870 in 3D‐CT.
