Diagnostic accuracy of the Self-administered, Self-reported History Questionnaire for lumbar spinal stenosis patients in Japanese primary care settings: a multicenter cross-sectional study (DISTO-project)

The Self-administered, Self-reported History Questionnaire version 1.1 with the new cutoff was more sensitive and had higher negative predictive value than version 1.0 with the initial cutoff. Therefore, the improved Self-administered, Self-reported History Questionnaire version 1.1 can be used for lumbar spinal stenosis screening, and its use may improve the quality of lumbar spinal stenosis diagnostic practice in Japanese primary care settings.