Figure 1

An example of a Summary Receiver Operating Characteristics (SROC) plot of sensitivity versus 1-specificity. Each rectangle represents the results from a single study; the width and the height of the rectangles could be used to represent the number of patients with and without the target condition; the solid line is the summary ROC curve; the thick black spot is the mean value for sensitivity and specificity; the ellipse around the black spot represents the 95% confidence intervals around the summary estimate.