Figure 2.

Fibromyalgia Assessment Status receiver operating characteristic curve. The results of the sensitivity and specificity analyses of various cut-off points for the composite index are summarised. We analysed the ability of Fibromyalgia Assessment Status to identify patient populations: the greater the area under the curve (AUC), or the further the distance to the 'change line', the better its discriminant power. ROC = receiver operating characteristic.

Salaffi et al. Arthritis Research & Therapy 2009 11:R125   doi:10.1186/ar2792
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