The area under the ROC curve is 0.826, with a 95% CI of 0.779, 0.874 and a P-value of!0.001, indicating that the questionnaire has good diagnostic efficacy for detecting CVS.
The area under the ROC curve is 0.826, with a 95% CI of 0.779, 0.874 and a P-value of!0.001, indicating that the questionnaire has good diagnostic efficacy for detecting CVS. Fig. 4 depicts the ROC curve.