Fig. 1

Composite ROC curves for key predictors of NSSI. Sens (Sensitivity): The proportion of actual positive cases which are correctly identified. Spec (Specificity): The proportion of actual negative cases which are correctly identified. PPV (Positive Predictive Value): Among the individuals labeled by the test as positive, the proportion that actually has the condition. NPV (Negative Predictive Value): Among the individuals labeled by the test as negative, the proportion that does not have the condition