title: Role of the Self-Administered, Self-Reported History Questionnaire to Identify Types of Lumbar Spinal Stenosis: A Sensitivity Analysis.
abstract: METHODS
  Case-control design.
  
  
  OBJECTIVE
  To evaluate the role of the self-administered, self-reported history questionnaire (SSHQ) in identifying types of lumbar spinal stenosis (LSS).
  
  
  BACKGROUND
  Diagnosis of types of LSS is controversial.
  
  
  METHODS
  A total of 235 patients with LSS were asked to respond to the SSHQ. All of these patients recovered following surgical treatment. The classification of LSS patients was based on history, physical examinations, and imaging studies. It is considered to be the gold standard. Radicular and neurogenic claudication types of LSS were based on the SSHQ developed by Konno et al. Two categories of LSS were determined based on the SSHQ tool and gold standard. Finally, a sensitivity analysis was carried out to evaluate the diagnostic value of the SSHQ.
  
  
  RESULTS
  The mean age of patients was 59.4 years. According to the criteria for gold standard, patients were diagnosed with the radicular type (n=103), and neurogenic claudication type (n=132). The questionnaire had desirable sensitivity, specificity, and accuracy in categorizing the two types of LSS: 97.8%, 66.6%, and 96.8% for the radicular type, and 97.0%, 80.0%, and 95.7% for the neurogenic claudication type.
  
  
  CONCLUSIONS
  Our findings indicate that the SSHQ is a reliable and a valid measure and it may be a clinical diagnosis support tool for identifying patients with two types of LSS.
authors.affiliation: Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Nayeb Aghaei
authors.affiliation: Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Parisa
authors.initials: P
authors.lastname: Azimi
authors.affiliation: Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Sohrab
authors.initials: S
authors.lastname: Shahzadi
authors.affiliation: Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Shirzad
authors.initials: S
authors.lastname: Azhari
authors.affiliation: Department of Neurosurgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Hassan Reza
authors.initials: HR
authors.lastname: Mohammadi
keywords: Lumbar spinal stenosis; Neurogenic claudication; Radicular pain; Self-reported history questionnaire