Fig. 6
From: Prediction of spontaneous closure of isolated ventricular septal defects in utero and postnatal life
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12887-016-0735-2/MediaObjects/12887_2016_735_Fig6_HTML.gif)
When SC is defined as a state variable and the defect diameter is defined as a test variable, the value of state variable is set to zero, and a receiver operating characteristic (ROC) curve can be achieved. Area under the curve is 0.842; P = 0.000; Upper cut-off value = 2.55 mm