title: Validation of the Korean Version of the DN4 Diagnostic Questionnaire for Neuropathic Pain in Patients with Lumbar or Lumbar-Radicular Pain.
abstract: OBJECTIVE
  To evaluate the diagnostic value of the Korean version of the Douleur Neuropathique 4 (DN4) questionnaire and to validate this questionnaire in terms of psychometric properties in patients with chronic pain due to degenerative spinal disease.
  
  
  METHODS
  The Korean version of the DN4 questionnaire, which was translated and linguistically validated by the MAPI Research Group, was tested on 83 patients with lumbar or lumbar-radicular pain. Test-retest reliability was evaluated in a subsample of 40 patients who completed two assessments with an interval of 2 weeks. Nociceptive pain and neuropathic component pain were diagnosed in 40 and 43 patients, respectively.
  
  
  RESULTS
  The Cronbach's α coefficient of internal consistency was 0.819, and the test-retest intraclass correlation coefficient (3, 1) (95% confidence interval) was 0.813 (0.776-0.847) (n=40). The area under the receiver-operator characteristics curve was 0.953 (p<0.001), with 95% confidence interval between 0.869 and 0.990. The Korean version of the DN4 questionnaire showed a sensitivity of 100% and 87.1%, and a specificity of 88.2% and 94.1% at the cutoff value of 3/10 and 4/10, respectively, for discriminating neuropathic component pain.
  
  
  CONCLUSIONS
  The present study demonstrated the good discriminatory power of DN4 between nociceptive pain and neuropathic component pain in patients with lumbar or lumbar-radicular pain.
authors: Spine Center, Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
authors: Ho Joong
authors: HJ
authors: Kim
authors: Department of Anesthesiology & Pain Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
authors: Joon Hee
authors: JH
authors: Park
authors: Inserm U987, Ambroise Pare Hospital, Boulogne-Billancourt and UVSQ University, Versailles, France.
authors: Didier
authors: D
authors: Bouhassira
authors: Spine Center, Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
authors: Jae Hoon
authors: JH
authors: Shin
authors: Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea.
authors: Bong Soon
authors: BS
authors: Chang
authors: Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea.
authors: Choon Ki
authors: CK
authors: Lee
authors: Department of Mechanical and Control Engineering, The Cyber University of Korea, Seoul, Korea.
authors: Chang Hyun
authors: CH
authors: Baek
authors: Spine Center, Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea. highcervical@gmail.com.
authors: Jin S
authors: JS
authors: Yeom
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D059350:Chronic Pain / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009437:Neuralgia / Q000175:diagnosis*; D010147:Pain Measurement / Q000379:methods*; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*; D014175:Translating
keywords: Douleur Neuropathique 4 questionnaire; Korean language; Neuropathic pain; psychometric validation