Linganisha mbinu

	EQ-5D	Kiashirio cha Ulemavu cha HAQ	SF-12 Afya Survey
Nyanja	Upimaji wa Afya	Upimaji wa Afya	Upimaji wa Afya
Familia	Process / pipeline	Process / pipeline	Process / pipeline
Mwaka wa asili	1990	1980	1996
Mwanzilishi	EuroQol Group	James Fries and colleagues at Stanford University	John E. Ware Jr., Mark Kosinski, and Susan Keller
Aina	Generic preference-based health utility measure	Functional disability measurement for arthritis and chronic disease	Brief self-report health status instrument
Chanzo asilia	Rabin, R., & de Charro, F. (2001). EQ-5D: a measure of health status from the EuroQol Group. Annals of Medicine, 33(5), 337–343.	Bruce, B., & Fries, J. F. (1989). The Stanford Health Assessment Questionnaire: a review of its history, issues, progress, and documentation. Journal of Rheumatology, 16(8), 1055–1064.	Ware, J. E., Kosinski, M., & Keller, S. D. (1996). A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Medical Care, 34(3), 220–233.
Majina mbadala	EQ-5D-3L, EQ-5D-5L, EuroQol	HAQ-DI, Health Assessment Questionnaire, Disability Index	SF-12v2, Medical Outcomes Study SF-12
Zinazohusiana	5	5	4
Muhtasari	The EQ-5D is a standardized, preference-based health utility measure developed by the EuroQol Group in 1990. It combines a descriptive health profile (five dimensions, three or five response levels) with a visual analog scale to quantify overall health status. The instrument has become essential for health economics, clinical trials, and cost-effectiveness analysis worldwide.	The Health Assessment Questionnaire Disability Index (HAQ-DI) is a 20-item self-report measure of functional disability developed by Fries and colleagues at Stanford University in 1980. Originally designed for rheumatoid arthritis, the HAQ-DI has become the gold-standard functional assessment instrument across diverse rheumatic diseases and chronic conditions.	The SF-12 is a brief, 12-item version of the SF-36 health survey developed by Ware, Kosinski, and Keller in 1996. Designed to reduce respondent burden while maintaining psychometric validity, it has become the standard instrument for large-scale surveys, epidemiological studies, and health outcomes research where administration time is critical.