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- 04 May 2017, 15:12
#2030
Calculating Pharmacoeconomics HALYs DALYs QALYs using Different Formulas
Health-adjusted life years (HALYs) are population health measures permitting morbidity and mortality to be simultaneously described within a single number. They are useful for overall estimates of burden of disease, comparisons of the relative impact of specific illnesses and conditions on communities, and in economic analyses.
HALY = YERF + YLL.
YERF=Year Equivalents of life lost due to Reduced Functioning
Calculating YERF== I * (1-P) * D
where I = incident cases
P = preference score
D = average duration
YLL = N x L, where N = number of deaths due to condition, L = standard life expectancy at age of death (expectancy - age at death)
Quality-adjusted life years (QALYs) and disability-adjusted life years (DALYs) are types of HALYs whose original purposes were at variance.
QALY= Y*Q
Y= Life expectancy of individual for Chronic Disease or Duration of Intervention for acute disease.
Q= Q Weight Scaled from Q=0 to Q=1.0 ( Full Health)
DALY= YLL+YLD
YLD = I x DW x L In this formula I = number of incident cases in the population, DW = disability weight of specific condition, and L = average duration of the case until remission or death (years).
YLL = N x L, where N = number of deaths due to condition, L = standard life expectancy at age of death (expectancy - age at death)
Related Abbreviations:
Health Adjusted Life Expectancy (HALE)
Disability Adjusted Life Expectancy (DALE)
Disability Free Life Expectancy (DFLE)
Health-adjusted life years (HALYs) are population health measures permitting morbidity and mortality to be simultaneously described within a single number. They are useful for overall estimates of burden of disease, comparisons of the relative impact of specific illnesses and conditions on communities, and in economic analyses.
HALY = YERF + YLL.
YERF=Year Equivalents of life lost due to Reduced Functioning
Calculating YERF== I * (1-P) * D
where I = incident cases
P = preference score
D = average duration
YLL = N x L, where N = number of deaths due to condition, L = standard life expectancy at age of death (expectancy - age at death)
Quality-adjusted life years (QALYs) and disability-adjusted life years (DALYs) are types of HALYs whose original purposes were at variance.
QALY= Y*Q
Y= Life expectancy of individual for Chronic Disease or Duration of Intervention for acute disease.
Q= Q Weight Scaled from Q=0 to Q=1.0 ( Full Health)
DALY= YLL+YLD
YLD = I x DW x L In this formula I = number of incident cases in the population, DW = disability weight of specific condition, and L = average duration of the case until remission or death (years).
YLL = N x L, where N = number of deaths due to condition, L = standard life expectancy at age of death (expectancy - age at death)
Related Abbreviations:
Health Adjusted Life Expectancy (HALE)
Disability Adjusted Life Expectancy (DALE)
Disability Free Life Expectancy (DFLE)
Last bumped by Admin on 04 May 2017, 15:12.
