Development and testing of a neuropathic pain screening questionnaire: ID Pain

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Abstract
Objective: To develop a patient-completed screening tool to help differentiate nociceptive and neuropathic pain.Research design and methods: A multicenter study was performed for item reduction (initial 89-item questionnaire) and model building. Patients (N = 586) with non-headache chronic pain completed the questionnaire and were referred to pain specialists for diagnosis. Factor and regression analyses were used to derive a final, 6-item questionnaire – ID Pain. A second multicenter study evaluated reliability and validity. Patients (N = 308) treated by pain specialists completed ID Pain and validation measures.Main outcome measures: Sensitivity and specificity were assessed using receiver operating characteristic curves and the concordance c index. Reliability was assessed using a κ statistic and intraclass correlation coefficient.Results: Final 6 items were: did the pain feel: (1) like pins and needles? (2) hot/burning? (3) numb? (4) like electrical shocks? (5) is the pain made worse with the ...