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	Seattle Angina Questionnaire (SAQ)	Classificazione Funzionale della New York Heart Association (NYHA)
Campo	Cardiologia	Cardiologia
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	1995	1994
Ideatore	John A. Spertus	New York Heart Association
Tipo	Self-report questionnaire	Ordinal clinician-assessment classification system
Fonte seminale	Spertus, J. A., Winder, J. A., Dewhurst, T. A., Deyo, R. A., Prodzinski, J., McDonell, M., & Fihn, S. D. (1995). Development and evaluation of a health-related quality of life measure for men with erectile dysfunction. Journal of the American College of Cardiology, 25(2), 149–155.	The Criteria Committee of the New York Heart Association. (1994). Nomenclature and Criteria for Diagnosis of Diseases of the Heart and Great Vessels (9th ed.). Little, Brown and Company.
Alias	SAQ	NYHA, NYHA Class, Functional Classification
Correlati	4	4
Sintesi	The Seattle Angina Questionnaire (SAQ) is a 19-item self-report measure that evaluates the frequency and severity of angina symptoms, functional limitations, and disease-specific quality of life in patients with coronary artery disease. Developed by Spertus and colleagues in 1995, the SAQ has become the gold-standard symptom-specific QoL instrument in cardiology and is recommended by major guidelines for assessing angina burden and treatment response.	The New York Heart Association (NYHA) Functional Classification is a four-category ordinal system for grading heart failure severity based on the level of physical activity that precipitates dyspnea or other HF symptoms. Established by the NYHA in 1928 and refined in 1994, the NYHA classification is the oldest and most widely used functional status metric in cardiology, providing a simple, clinically intuitive framework for describing HF symptom burden, guiding treatment intensity, and predicting prognosis.