Pharmacists should use health economics to make a case for new drugs and to implement change, rather than seeing it as a means to prevent innovation, said Dr ANDREW WALKER (head of health economics, Greater Glasgow health board).
Decisions as to whether to use new drugs and treatments were being made all over the UK and it was vital that all considerations, including financial ones, were taken into account before reaching a conclusion.
Using health economics when deciding whether a drug should be funded was the ethical thing to do, as it posed hard questions, making health care professionals question whether services that they were providing were of real benefit or were just a passing trend.
"Health economics should not be seen as just a means to stop treatment from being used on the grounds of cost; it gives health care professionals the power to make changes and decisions that are defensible through the legal system, should it become necessary," he said.
Dr Walker said that health economics was a good area for pharmacists to specialise in, as they were well placed to look for ways of improving or changing the current service.
For example, in the case of two drugs that cost the same as each other but where one was more effective than the other, it would be unethical to use the less effective of the two. However, if one cost 10 times more than the other, it might become unethical to use the more expensive one.
The important thing was to be systematic about health economics. When beginning an economic study, it was important to have a well-defined study question. The situation had to be one in which there were two or more options (including the status quo). There should be savings to be made, data available to measure each option and obvious benefits from the change.
Understanding the benefits of making a change was crucial, as this determined what outcomes and measures should be used. It was important that evaluations were timely and were completed before, rather than after, a decision had been made. It was important not to let "perfect" get in the way of "helpful and timely" and not to suffer from "quantophrenia", in which there was a neurotic need to quantify everything (including things that could not be quantified). Health economics took time and was rarely perfect but any other evaluation system would also be flawed.
There were a number of ways of measuring benefits. The first was the "balance sheet" approach, in which all costs and benefits were measured and listed. This was a transparent method but no recommendation was made at the end. The second method was cost-effectiveness analysis, which focused on a single measure, such as cost per unit reduction in cholesterol. This was a clear measure but was narrow and did not give the broader picture. The third method was the quality adjusted life year (QALY), which was a good method, as it allowed comparison of totally different interventions. The biggest weaknesses of the QALY were that the measurements made generally lacked sophistication and it was not immediately obvious what assumptions had been made when reaching a recommendation. The final method was conjoint analysis. This assumed that the process of care was more important than the health outcome. This was still in experimental stages.
Common problems with economic evaluation were that the options selected were too narrow, that important costs or benefits were missed out, that inappropriate data sources were used, that there was inaccurate interpretation of the data and that there was no allowance for uncertainty.
Dr Walker recommended that an economist be involved in any economic study from the start. One of his concerns about the National Institute for Clinical Excellence (NICE) was that its role implied that economic evaluation led to a definite, unambiguous answer, which was not always the case. It was not clear what the public expected from the NHS but the good of the many should not always outweigh that of the individual - did the public want an NHS that did not fund beta-interferon, or heart/lung transplants?
It was important to overcome the usual barriers of lack of time, experience and the perception that health economics was irrelevant in day-to-day practice.
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Andrew Walker: health economics poses hard questions but is of benefit
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