Linganisha mbinu

	Kiwango cha Utendaji wa Ncha ya Chini	Kiwango cha Tathmini ya Mabadiliko kwa Ujumla (Global Rating of Change Scale)
Nyanja	Tiba ya Michezo	Tiba ya Michezo
Familia	Process / pipeline	Process / pipeline
Mwaka wa asili	1999	1989
Mwanzilishi	Jill M. Binkley, Paul W. Stratford, Sheila A. Lott, Duane L. Riddle	Ruben Jaeschke, Jack Singer, Gordon H. Guyatt
Aina	Patient self-report	Patient global perception
Chanzo asilia	Binkley JM, Stratford PW, Lott SA, Riddle DL. The Lower Extremity Functional Scale (LEFS): scale development, measurement properties, and clinical application. Phys Ther. 1999;79(4):371-383.	Jaeschke R, Singer J, Guyatt GH. Measurement of health status. Ascertaining the minimal clinically important difference. Control Clin Trials. 1989;10(4):407-415.
Majina mbadala	LEFS	GRC, Global Rating of Change
Zinazohusiana	4	4
Muhtasari	The Lower Extremity Functional Scale (LEFS) is a 20-item patient self-report instrument designed to assess functional limitations in individuals with lower extremity musculoskeletal disorders. Developed by Binkley, Stratford, Lott, and Riddle in 1999 and published in Physical Therapy, the LEFS provides a validated, general lower-extremity outcome measure applicable across diverse pathologies (knee, ankle, hip, foot injuries and conditions), making it particularly valuable in physical therapy and rehabilitation settings.	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.