Fig. 1From: Juvenile dermatomyositis: association between nail fold capillary end row loop– area under the curve– and disease damage indicatorsArea under the curve (AUC) calculation by GraphPad Prism. First, the curve was created by plotting the ERL data over time. Then, Prism divides AUC into multiple small trapezoid areas, which are measured individually, using the trapezoid rule [area = ½ (base a + base b) x height], and added up to get the total AUC.Back to article page