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Overactivity is a characteristic of individuals with chronic pain. Previous cross-sectional studies demonstrated a relationship between perfectionism and overactivity. Therefore, the present study used a longitudinal design to determine whether pain severity and pain interference were exacerbated by overactivity and whether overactivity was exacerbated by perfectionism.

Purpose: The Facioscapulohumeral Muscular Dystrophy Health Index (FSHD-HI) is a patient-reported outcome measure developed for patients with FSHD. This study aimed to translate the FSHD-HI into Japanese (FSHD-HI-J), evaluate cultural adaptation, and examine its psychometric properties. Materials and methods: We created two forward translations, integrated them into a single Japanese version, and evaluated the back-translated version of the FSHD-HI. After finalizing the translation and cultural adaptation, we conducted a survey of 66 patients with FSHD to examine the reliability and validity of the FSHD-HI-J. For psychometric evaluations, we used Cronbach's alpha to assess internal consistency, the intraclass correlation coefficient (ICC) for test-retest reliability, and assessed validity based on the associations between FSHD-HI-J, clinical variables, and quality of life measures. Results: The FSHD-HI-J was found to be clinically relevant, indicating high internal consistency and test-retest reliability (ICC = 0.92 [95% confidence interval: 0.86-0.95] for the total score), as well as significant associations with clinical variables (D4Z4 repeats and functional impairment) and other quality of life measures (|rho| = 0.25-0.73). Conclusions: The FSHD-HI-J is a valid and reliable patient-reported outcome measure for Japanese patients with FSHD. This validated, disease-specific patient-reported outcome is essential for future clinical practice and clinical trials. IMPLICATIONS FOR REHABILITATION: Facioscapulohumeral muscular dystrophy (FSHD) affects not only a patient's physical abilities but also their social activities, participation, and overall quality of life. The FSHD-Health Index (FSHD-HI) is an instrument developed as a disease-specific patient-reported outcome measure to evaluate the burden experienced by patients. The Japanese version of the FSHD-HI has been established as a reliable and validated measure for Japanese-speaking patients with FSHD. The Japanese version of the FSHD-HI can serve as a useful instrument for evaluating the effectiveness of interventions in future trials. [ABSTRACT FROM AUTHOR]

Author(s): Tomonori Adachi [sup.1] [sup.2] [sup.3] , Kiyoka Enomoto [sup.1] [sup.4] , Keiko Yamada [sup.5] [sup.6] [sup.7] , Daisuke Inoue [sup.8] , Miho Nakanishi [sup.1] [sup.9] , Noriyo Takahashi [sup.4] [...], Purpose The Pain Self-Efficacy Questionnaire is a valid measure assessing self-efficacy in individuals with chronic pain. Short-form versions of the measure have been developed to decrease the assessment burden. However, few studies have evaluated the psychometric properties of the short forms in languages other than English. The aim of this study was to evaluate two 2-item short forms and one 4-item short form of the Japanese Pain Self-Efficacy Questionnaire in terms of internal consistency, criterion validity, structural validity, and construct validity. Methods This was a cross-sectional study. Data from 150 individuals with mixed chronic pain at a pain management center in a university hospital were extracted from clinical records and analyzed. The data included the information of the original version and short forms of the Japanese Pain Self-Efficacy Questionnaire, and other pain-related measures assessing pain intensity, pain interference, anxiety, depression and pain catastrophizing. Results Item statistics supported the item selection for each of the three short forms. All the short forms demonstrated adequate internal consistency and criterion validity. With respect to construct validity, one of the 2-item short forms failed to meet the criterion regarding the change in the magnitude of correlation with a depression scale. The 4-item short form met all the criteria including structural validity. Conclusion The study findings provide evidence for the reliability and validity of 2- and 4-item versions of the Japanese Pain Self-Efficacy Questionnaire for use in clinical and research settings.