Responsiveness and minimum important change of the Oswestry Disability Index in Italian subjects with symptomatic lumbar spondylolisthesis

Carla Vanti, Silvano Ferrari, Jorge Hugo Villafañe, Pedro Berjano, Marco Monticone

Research output: Contribution to journalArticle

Abstract

BACKGROUND: This study aims to investigate the responsiveness and the minimum important change of the Italian version of the Oswestry Disability Index (ODI-I) in subjects with symptomatic specific low back pain associated with lumbar spondylolisthesis (SPL).

MATERIALS AND METHODS: One hundred and fifty-one patients with symptomatic SPL completed the ODI-I, a 0-100 numerical rating scale (NRS), and performed the prone and supine bridge tests. The global perception of effectiveness was measured with a 7-point Likert scale. Responsiveness was assessed by distribution methods (minimum detectable change [MDC], effect size [ES], standardized response mean [SRM]) and anchor-based methods (ROC curves).

RESULTS: The MDC was 4.23, the ES was 0.95 and the SRM was 1.25. ROC analysis revealed an area under the curve of 0.76 indicating moderate discriminating capacity. The best cut-off point for the dichotomous outcome was 7.5 (sensitivity 90.3%, specificity 56.7%). .

CONCLUSIONS: The ODI-I proved to be responsive in detecting changes after conservative treatment in subjects with lumbar SPL.

LEVEL OF EVIDENCE: II.

Original languageEnglish
Pages (from-to)145-150
Number of pages6
JournalJournal of Orthopaedics and Traumatology
Volume18
Issue number2
DOIs
Publication statusPublished - Jun 2017

Fingerprint Dive into the research topics of 'Responsiveness and minimum important change of the Oswestry Disability Index in Italian subjects with symptomatic lumbar spondylolisthesis'. Together they form a unique fingerprint.

  • Cite this