title: Cross-cultural adaptation and validation of the Turkish version of the pain catastrophizing scale among patients with ankylosing spondylitis.
abstract: [Purpose] This study describes the cultural adaptation, validation, and reliability of the Turkish version of the Pain Catastrophizing Scale in patients with ankylosing spondylitis. [Methods] The validity of the Turkish version of the Pain Catastrophizing Scale was assessed by evaluating data quality (missing data and floor and ceiling effects), principal components analysis, internal consistency (Cronbach's alpha), and construct validity (Spearman's rho). Reproducibility analyses included standard measurement error, minimum detectable change, limits of agreement, and intraclass correlation coefficients. [Results] Sixty-four adult patients with ankylosing spondylitis with a mean age of 42.2 years completed the study. Factor analysis revealed that all questionnaire items could be grouped into two factors. Excellent internal consistency was found, with a Chronbach's alpha value of 0.95. Reliability analyses showed an intraclass correlation coefficient (95% confidence interval) of 0.96 for the total score. There was a low correlation coefficient between the Turkish version of the Pain Catastrophizing Scale and body mass index, pain levels at rest and during activity, health-related quality of life, and fear and avoidance behaviors. [Conclusion] The results of this study indicate that the Turkish version of the Pain Catastrophizing Scale is a valid and reliable clinical and research tool for patients with ankylosing spondylitis.
authors.affiliation: School of Physical Therapy and Rehabilitation, Dokuz Eylul University, Turkey.
authors.forename: Nursen
authors.initials: N
authors.lastname: İlçin
authors.affiliation: School of Physical Therapy and Rehabilitation, Dokuz Eylul University, Turkey.
authors.forename: Barış
authors.initials: B
authors.lastname: Gürpınar
authors.affiliation: School of Physical Therapy and Rehabilitation, Dokuz Eylul University, Turkey.
authors.forename: Deniz
authors.initials: D
authors.lastname: Bayraktar
authors.affiliation: School of Physical Therapy and Rehabilitation, Dokuz Eylul University, Turkey.
authors.forename: Sema
authors.initials: S
authors.lastname: Savcı
authors.affiliation: Department of Internal Medicine, Division of Rheumatology, Dokuz Eylul University School of Medicine, Turkey.
authors.forename: Pınar
authors.initials: P
authors.lastname: Çetin
authors.affiliation: Department of Internal Medicine, Division of Rheumatology, Dokuz Eylul University School of Medicine, Turkey.
authors.forename: İsmail
authors.initials: İ
authors.lastname: Sarı
authors.affiliation: Department of Internal Medicine, Division of Rheumatology, Dokuz Eylul University School of Medicine, Turkey.
authors.forename: Nurullah
authors.initials: N
authors.lastname: Akkoç
keywords: Ankylosing spondylitis; Catastrophizing; Pain