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The receiver operating characteristics (ROC) curve for the optimal cut-off value of SUVmax in suggesting p53 positive NSCLC. Area under the curve: 0.769; 95% CI: 0.654 to 0.884; p = 0.000. A SUVmax ratio of 5.15 or lower suggests a NSCLC to be p53 positive with a sensitivity of 79.5% and specificity of 47.8%.
