Fig. 3From: Avoiding Catch-22: validating the PainDETECT in a population of patients with chronic painVENN-Diagram of all the five outcomes per patient. Physicians A: classification of a neuropathic pain component (NePC) exists; Physicians B: NePC exists; Grading A: NePC exists according to the Grading System by physicians A; Grading B: NePC exists according to the Grading System by physicians B; PainDETECT-Dlv: Outcome of the PainDETECT-Dlv indicates the existence of a NePC. Non NePC: No NePC exists according to physicians, Grading Systems and the PainDETECT-DlvBack to article page