Affiliations: [a] Department of Orthotics and Prosthetics, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran | [b] Rehabilitation Research Center, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
Correspondence:
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Corresponding author: Mohammad Kamali, Rehabilitation Research Center, School of Rehabilitation Sciences, Iran University of Medical Sciences, Madadkaran Avenue, Shahnazari St., Madar Square, Mirdamad Blvd., Tehran, Iran. Tel.: +98 21 2222 1577; Fax: +98 21 2222 0946; E-mail: kamali.mo@iums.ac.ir.
Abstract: BACKGROUND: The Quality of Life Profile for Spinal Deformities (QLPSD) is the first specific questionnaire to evaluate health-related quality-of-life (HRQoL) in adolescents with spinal deformities. Measuring HRQoL is important because spinal deformities and their management may negatively affect quality of life (QoL), thereby importantly affecting treatment effectiveness. OBJECTIVE: This study aimed to examine the validity and reliability of a Persian version of the QLPSD through patients with adolescent idiopathic scoliosis and Scheuermann’s kyphosis. METHODS: A cross-sectional design was used to determine the validity and reliability of the Persian version of the QLPSD based on the IQOLA protocols. RESULTS: The QLPSD was successfully culturally adapted, showing acceptable internal consistency (cronbach’s α= 0.88) and intraclass correlation coefficients (ICC = 0.91). Concurrent validity was supported by comparing scores on corresponding dimensions of the Persian versions of QLPSD and the Scoliosis Research Society-22r (SRS-22r) questionnaires (function, pain, and body-image). Discriminant validity was supported though observation of significant differences between participants who had different clinical characteristics (p< 0.05). CONCLUSIONS: The Persian QLPSD is valid and reliably measures QoL among adolescents with spinal deformities; it may be used in clinical evaluations and future research.
Keywords: QLPSD, quality of life, spinal deformities, adaptation, validity, reliability
