qalys and ethics is there an ethical / valid alternative? prof. dr. jan van busschbach 11
TRANSCRIPT
Arguments reimbursement
Pro Effectiveness Compassion Solidarity Empathy
Contra Costs Cost effectiveness
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Health Economics
Comparing different allocations Should we spend our money on
• Wheel chairs• Screening for cancer
Comparing costs Comparing outcome
Outcomes must be comparable Make a generic outcome measure
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Outcomes in health economics
Specific outcomes are incompatible Allow only for comparisons within the specific field
• Clinical successes: successful operation, total cure• Clinical failures: “events”
“Hart failure” versus “second psychosis”
Generic outcome are compatible Allow for comparisons between fields
• Life years• Quality of life
Most generic outcome Quality adjusted life year (QALY)
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Example Blindness Time trade-off value is 0.5 Life span = 80 years 0.5 x 80 = 40 QALYs
Quality Adjusted Life Years (QALY)
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0.00
1.00
X
Life years40 80
0.5 x 80 = 40 QALYs
Area under the curve
0 10 20 30 40 50 60 70 800
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
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Co-morbidity
Psychotherapy
No psychotherapy
Life years
QA
LY
we
igh
ts
I want to live in…
Country A Life expectancy 80 Quality of life 0.8 Focus on common
diseases
Country B Life expectancy 78.8 Quality of life 0.75 Focus on rare
catastrophic diseases
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QALY league table
Intervention $ / QALYGM-CSF in elderly with leukemia 235,958
EPO in dialysis patients 139,623
Lung transplantation 100,957
End stage renal disease management 53,513
Heart transplantation 46,775
Didronel in osteoporosis 32,047
PTA with Stent 17,889
Breast cancer screening 5,147
Viagra 5,097
Treatment of congenital anorectal malformations 2,778
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In the past, much criticism
Cohen CB. Quality of life and the analogy with the Nazis. Journal of Medicine and Philosophy 8: 113-35, 1983.
Criticism remains
….the strictly fascist essence of those QALYs (so-called Quality-
Adjusted Life Years)…
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10.915 QALY publications
0200400600800
100012001400
1970 1980 1990 2000 2010 2020
Pu
bli
cati
ons
1980[pdat] AND (QALY or QALYs)
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Three problems with the criticism …..
1. Arguments represent aversion toward a limited budget2. Proposed alternatives turn out to be the same3. Even equity concerns are in need of QALY
1. Arguments often represent aversion limited budget
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“…Wij hebben duidelijk aangegeven dat een discussie over "wat maatschappelijk nog aanvaardbaar is" [kosten per QALY] alleen gevoerd mag worden als geldverslindende "frivoliteiten" door de maatschappij […] zijn uitgebannen. Bijvoorbeeld "joint strike fighters“…
Kees van Bezooijen in his roll as Patient representative, 2007
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Three problems with the criticism …..
1. Arguments represent aversion toward a limited budget2. Proposed alternatives turn out to be the same3. Even equity concerns are in need of QALY
2. Proposed alternative turns out to be the same…
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TWiST Time Without Symptoms of disease and
subjective Toxic effects of treatment
HYE Health Years Equivalent
SAVE Saved Young Life Equivalent
DALY Disability Adjusted Life Years
Capabilities Amartya Sen
1818
Burden of Disease Project
WHO Global Burden of Disease (GBD) Impact of diseases world wide Estimates of epidemiology per disease
Mortality Quality of life losses
In need of one measure of health But WHO disliked QALY…
1919
Chris Murray
Harvard School of Public Health
Worked outside Health economics Med Decision Making
DALY Disability Adjusted Life Years Lost life years Lost Quality of life
2020
DALY / QALY
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 10 20 30 40 50 60 70 80 90
Life years
Ad
jusm
ent
fact
or
DALY
QALY
QALYs are measured in an invalid way Life years is not the problem, thus… It must be the validity of quality of life assessment…
One should not use cost effectiveness Often referred to as ‘ethics’
Two points of critique
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Efficiency/equity debate
Cost per QALY represents efficiency But is our health care system based on
efficiency? In health care, next to efficiency…
Compassion Solidarity Empathy
Is (should) burden (be) a criterion?
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0
5
10
15
20
25
30
Accepted Rejected
High burden Low burden
Pronk & Bonsel, Eur J Health Econom 2004, 5: 274-277
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80
0A B C
Lev
ensj
aen
Costs/QALY as indicator of solidarity
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60
40
20
€ 50.000
€ 30.000
€ 40.000
Costs/QALY versus Burden of disease
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€ 80.000
€ 60.000
€ 40.000
€ 20.000
€ 0
Burden of disease
X
XX
XX
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Three problems with the criticism …..
1. Arguments represent aversion toward a limited budget2. Proposed alternatives turn out to be the same3. Even equity concerns are in need of QALY
QALYs moderate NICE’s decisions
At average levels for all covariates, a decision would have a 50% chance of rejection if its ICER were £45,118/QALY
Dakin, Devlin, Rice, Parkin, O’Neill, Feng (2014) The influence of cost effectiveness and other factors on NICE decisions. Health Economics, 2014