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Evaluation Economic Evaluation

Evaluation Economic Evaluation. Economic evaluation considers assessment of intervention effects in economic terms, which is often of greatest interest to fund allocators Intervention evaluation involves two measures; the health effects or effectiveness of the intervention

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Evaluation Economic Evaluation

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  1. Evaluation Economic Evaluation • Economic evaluation considers assessment of intervention effects in economic terms, which is often of greatest interest to fund allocators • Intervention evaluation involves two measures; • the health effects or effectiveness of the intervention • the value or efficiency of the effects • Economic evaluation expertise can lie outside the competencies of an individual public health nutritionist however simple economic assessment tools can be applied Economic Evaluation

  2. Economic Evaluation

  3. Cost in Health Care • Resources for PHN are finite so ensuring value for money is an important objective when delivering and funding interventions • Health prevention activities are notoriously underfunded; • historical political power in traditional medicine disciplines • societal trends overplaying the treating illness • Economic evaluations can show PHN interventions in a comparable measure of value with treatment interventions Economic Evaluation

  4. Characteristics of Economic Evaluation • Economic evaluation involves identifying, measuring and valuing both the inputs (costs) and outcomes (benefits) of the intervention/s • there are two broad areas of economic measurement; • Provider or narrow perspective - consider inputs (costs) and outcomes (benefits), and compares both aspects across alternative interventions • Societal perspective - include only some elements of inputs and outcomes • The provider approach has limitations because ranking interventions in terms of value for money may be very different if the analysis includes all costs and benefits Economic Evaluation

  5. Types of Economic Evaluation • Tracing all inputs and finding valuations for all resources used can be difficult but should not deter intelligent estimates being made • Evaluations that consider both outcomes and resources use are full economic evaluations – there are four distinct types: • Cost-minimisation analysis • Involves comparison between two or more alternative interventions whose outcomes are assumed to be exactly the same • Assumes all consequences of the alternative interventions are the same • Generally not recommended Economic Evaluation

  6. Types of Economic Evaluation • 2. Cost-effectiveness analysis • Most common type of economic evaluation in health care • Benefit is usually measured as a quantifiable unit • behavioural - fruit and vegetable intake • health outcome (glucose level) • Criticised for failing to recognise the broader benefits of PHN interventions however quantification of measures is required for analysis • Cannot be used to compare interventions - most suitable when interventions with the same health aims are being compared Economic Evaluation

  7. Types of Economic Evaluation • 3. Cost-utility analysis • Uses a common measure of outcome to enable comparison between a range of interventions - between PHN intervention, or between PHN intervention and treatment approach • Benefits or outcome are expressed as a measure that reflects how individuals value or gain utility from the quality and length of life: • QALYs (quality adjusted life years) • DALYS (disability adjusted life years) • HYE (health year equivalents • Can identify only relatively large changes in individual health status and can put PHN interventions at a disadvantage Economic Evaluation

  8. Types of Economic Evaluation • 4. Cost-benefit analysis • Measures all outcomes in monetary terms • Calculates monetary values of health benefits and costs to conclude if one side is greater than the other • Commonly expressed as cost-benefit ratio • Useful for comparing interventions with many diverse outcomes - most appropriate for economic evaluation of inter-sectoral interventions Economic Evaluation

  9. Economic Evaluation

  10. Process of Economic Evaluation • To undertake a high-quality economic evaluation a multidisciplinary team containing both economists and public health nutritionists is required • The main steps to consider for an economic evaluation are: • Defining the economic question and perspective • Determining the alternatives to be evaluated • Choosing the evaluation design • Identifying, measuring and valuing the costs • Identifying, measuring and valuing the benefits • Adjusting costs and benefits for the differential timing • Measuring incremental costs and benefits • Putting the costs and benefits together • Testing the sensitivity of the results • Presenting the results Economic Evaluation

  11. Efficiency verses Equity • Trade-off between maximising aggregate benefits and attaining an equitable distribution across the whole population • A principle criterion for economic evaluation of maximising outcomes within a defined budget fails to account for who receives these outcomes • Intervention evaluation is best explored in terms of effectiveness, efficiency and equity • Targeting coverage rather than output can increase equity particularly when those not reached are most likely to benefit – unemployed, lower education levels, lower income levels Economic Evaluation

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