Fig. 2

HSROC plots of randomised (left) and non-randomised (right) GBS studies that compared self-collection to provider-collection: The circles represent individual study estimates, with circle size proportional to sample size of each study. The continuous green line is the summary curve from the model. The red square represents the summary estimate for sensitivity and specificity and the yellow dotted line represents the 95% confidence region for this summary estimate. The green dotted line represents the 95% prediction region