Persian adaptation of Quality of Life Profile for Spinal Deformities questionnaire.

Abstract

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. 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. A cross-sectional design was used to determine the validity and reliability of the Persian version of the QLPSD based on the IQOLA protocols. 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). The Persian QLPSD is valid and reliably measures QoL among adolescents with spinal deformities; it may be used in clinical evaluations and future research.