Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa học đề tài : Psychometric validation of the Portuguese version of the Neuropathic Pain Symptoms Inventory | de Andrade et al. Health and Quality of Life Outcomes 2011 9 107 http content 9 1 107 HEALTH AND QUALITY OF LIFE OUTCOMES RESEARCH Open Access Psychometric validation of the Portuguese version of the Neuropathic Pain Symptoms Inventory 2 2 3 Daniel Ciampi de Andrade 1 Karine ASL Ferreira 1 Carine M Nishimura Lyn T Yeng Abrahão F Batista Katia de Sá4 Joaci Araujo1 Patrick RNAG Stump1 Helena H Kaziyama1 Ricardo Galhardoni1 Erich T Fonoff1 Gerson Ballester1 Telma Zakka1 Didier Bouhassira5 and Manoel J Teixeira1 Abstract Backgroud It has been shown that different symptoms or symptom combinations of neuropathic pain NeP may correspond to different mechanistic backgrounds and respond differently to treatment. The Neuropathic Pain Symptom Inventory NPSI is able to detect distinct clusters of symptoms . dimensions with a putative common mechanistic background. The present study described the psychometric validation of the Portuguese version PV of the NPSI. Methods Patients were seen in two consecutive visits three to four weeks apart. They were asked to i rate their mean pain intensity in the last 24 hours on an 11-point 0-10 numerical scale ii complete the PV-NPSI iii provide the list of pain medications and doses currently in use. VAS and Global Impression of Change GIC were filled out in the second visit. Results PV-NPSI underwent test-retest reliability factor analysis analysis of sensitivity to changes between both visits. The PV-NPSI was reliable in this setting with a good intra-class correlation for all items. The factorial analysis showed that the PV-NPSI inventory assessed different components of neuropathic pain. Five different factors were found. The PV-NPSI was adequate to evaluate patients with neuropathic pain and to detect clusters of NeP symptoms. Conclusions The psychometric properties of the PV-NPSI rendered it adequate to evaluate patients with both central and peripheral neuropathic pain syndromes and to detect clusters of NeP .