Statistical analysis
Paired forest plots of sensitivity
and specificity with corresponding 95% confidence intervals were
produced for each protocol measuring the main outcome of EP. Considering
the potential threshold effect, we decided to use summary receiver
operating characteristic(SROC) curves to evaluate the accuracy of the
model. The area under the ROC curve(AUC) was calculated by numerical
integration of the SROC curve area. All analyses were performed using R.
version 3.6.3 and Revman version 5.4.