Figure 1From: Detecting the neuropathic pain component in the clinical setting: a study protocol for validation of screening instruments for the presence of a neuropathic pain component Flow-diagram of the study. PDQ: PainDETECT questionnaire; DN4: Douleur neuropatique 4 questions; DRI : Disability rating index; HADS: Hospital anxiety depression scale; RAND-36 : RAND 36-item health survey; PAS: Pain attribution scale; QST: Quantitative sensory testing; PGIC: Patients global impression of change.Back to article page