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	Global Rating of Change Scale（グローバル変化評価尺度）	足関節アウトカムスコア
分野	スポーツ医学	スポーツ医学
系統	Process / pipeline	Process / pipeline
提唱年	1989	2001
提唱者	Ruben Jaeschke, Jack Singer, Gordon H. Guyatt	Ewa M. Roos, Mats Brandsson, H. Hugelhotz, M. Klassbo, L. Stefan Lohmander
種類	Patient global perception	Patient self-report
原典	Jaeschke R, Singer J, Guyatt GH. Measurement of health status. Ascertaining the minimal clinically important difference. Control Clin Trials. 1989;10(4):407-415.	Roos EM, Brandsson M, Hugelhotz H, Klassbo M, Lohmander LS. Development and validation of the Foot and Ankle Outcome Score. J Orthop Sports Phys Ther. 2001;31(9):504-514.
別名	GRC, Global Rating of Change	FAOS
関連	4	4
概要	The Global Rating of Change (GRC) Scale is a single-item, self-report outcome measure that asks patients to rate the overall change in their condition since baseline assessment. Developed by Jaeschke, Singer, and Guyatt in 1989 and published in Controlled Clinical Trials, the GRC Scale has become a fundamental method for anchor-based interpretation of change scores on clinical outcome measures, enabling clinicians and researchers to determine the minimal clinically important difference (MCID) in standardized scales.	The Foot and Ankle Outcome Score (FAOS) is a 42-item patient self-report instrument designed to assess symptoms, function, and activity limitations in individuals with foot and ankle pathology. Developed by Roos and colleagues in 2001 and published in the Journal of Orthopedic & Sports Physical Therapy, the FAOS has become the standard outcome measure in foot and ankle surgery and rehabilitation research, providing comprehensive evaluation across pain, stiffness, physical function, sport/recreation, and foot-ankle-related quality of life.