Figure 1

Summary receiver-operating characteristic (ROC) plots showing test accuracy of cytology for detecting primary bladder cancer [32]. A) The summary ROC curve, representing the underlying relationship between sensitivity and specificity for the test across varying thresholds. B) The summary sensitivity and specificity and a 95% confidence region around it. The smaller oval shaped symbols in both graphs show the individual study results, with the height of the symbol representing the number of diseased individuals and the width of the ovals representing the number of non-diseased individuals.