Compara mètodes

	Diferència mínima important basada en àncora	Construcció d'escales Likert
Camp	Psicometria	Psicometria
Família	Process / pipeline	Process / pipeline
Any d'origen	1989	1932
Autor original	Guyatt, Jaeschke, and Singer	Rensis Likert
Tipus	Minimal clinically important difference estimation	Summated rating scale methodology
Font seminal	Jaeschke, R., Singer, J., & Guyatt, G. H. (1989). Measurement of health status: Ascertaining the minimal clinically important difference. Controlled Clinical Trials, 10(4), 407-415.	Likert, R. (1932). A technique for the measurement of attitudes. Archives of Psychology, 22(140), 1-55.
Àlies	MCID, Minimal clinically important difference, Anchor-based MCID, Minimal important change	Likert summated rating scale, Summated rating scale construction
Relacionats	4	5
Resum	The anchor-based method for establishing Minimal Clinically Important Difference (MCID) is a technique for determining the smallest change in a patient-reported outcome (PRO) that patients or clinicians perceive as meaningful or important. Pioneered by Guyatt, Jaeschke, and Singer in 1989, this approach anchors changes in outcome scores to external clinically meaningful events or judgments, enabling researchers and clinicians to interpret whether treatment effects represent real, patient-relevant improvements.	Likert scale construction is a systematic methodology for developing attitude measurement instruments using summated rating scales. Introduced by Rensis Likert in 1932, it enables researchers to quantify latent constructs such as attitudes, beliefs, and psychological states by aggregating responses across multiple items. The method remains foundational to quantitative social and health sciences research.