You are viewing a javascript disabled version of the site. Please enable Javascript for this site to function properly.
Go to headerGo to navigationGo to searchGo to contentsGo to footer
In content section. Select this link to jump to navigation

Development and validation of a functional disability index for chronic low back pain

Article type: Research Article

Authors: Duruöz, Mehmet Tuncaya; * | Özcan, Emelb | Ketenci, Aysegülb | Karan, Ayseb

Affiliations: [a] Physical Medicine and Rehabilitation Department, Rheumatology Division, Celal Bayar University Medical School, Manisa, Turkey | [b] Physical Medicine and Rehabilitation Department, Istanbul University Istanbul Medical School, Istanbul, Turkey

Correspondence: [*] Address for correspondence: Mehmet Tuncay Duruöz, MD., Physical Medicine and Rehabilitation Department, Rheumatology Division, Celal Bayar University Medical School, Evka 3 Mahallesi, 126/8 sokak, No: 3, Bornova, 35050 Izmir, Manisa, Turkey. Tel.: +90 533 512 1548; Fax: +90 232 375 5044; E-mail: tuncayduruoz@gmail.com

Keywords: Chronic low back pain, functional disability, outcome assessment

DOI: 10.3233/BMR-2012-00349

Journal: Journal of Back and Musculoskeletal Rehabilitation, vol. 26, no. 1, pp. 45-54, 2013

Published: 28 January 2013
Get PDF

Abstract

Objective:

To develop a valid and reliable functional disability scale for chronic low back pain (CLBP).

Methods:

Inpatients and outpatients suffering from low back pain (LBP) for at least 3 months were selected randomly. Patients with inflammatory LBP were not recruited. Interrater reliability and Cronbach’s α were examined. Face, content, convergent and divergent validities were investigated. Factor Analysis and pearson’s correlation coefficients (r) were performed.

Results:

112 patients (71 females) with a mean age of 39.93 (SD: 12.92) answered the 66 questions on the provisional scale. Elimination left 18 daily activity questions. The interrater reliability of the scale was 0.79 and Cronbach’s α was 0.90. Face and content validities were determined. It showed good convergence with the Quebec Back Pain Disability Scale (r: 0.82), the Oswestry Disability Index (r: 0.76), Waddell’s Functional Index (r: 0.68), and the Visual Analog Scale of Handicap (VAS-handicap) (r: 0.49) The scale showed no significant or fair relationship (divergence) with VAS-lumbar, VAS-radicular, Beck Depression Inventory, morning stiffness, night pain, finger tip-ground distance, radicular pain duration, or modified Schöber’s index. The scale had two main factors. First represents activities implicating forward bending and second represents standing activities.

Conclusion:

A practical functional disability scale for CLBP was developed and validated.

Show more