Computed a coefficients for the application of empirical equations in microprobe analysis are determined by the method developed by Rousseau and Claisse for X-ray fluorescence analysis. It Is shown that the Claisse-Qulntin rela-

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The Belgian healthcare system has a tradition of access and equity at affordable prices. As in other countries, the system becomes pressured by increasing healthcare costs. This paper describes the actual situation in Belgium with special focus on pharmaceutical products and the potential role of pharmacoeconomics in decision making on price and reimbursement. Nearly all people in Belgium are covered by compulsory health insurance. The system is paid for by social security, the patients and the federal and regional authorities. The part of the consumption of pharmaceuticals that is charged to insurance was about 62.1 billion Belgian francs (BeF), i.e. about 50% of the pharmaceutical market in 1994. Price setting in Belgium has been rather low due to the positive reimbursement list, where the price of a new drug is compared to existing drugs in a comparable therapeutic class (so-called reimbursement criteria). The expenditure on pharmaceuticals is increasing faster than global funding for public health. In order to control drug budgets, different cost-containment measures have been or are being taken, i.e. a mix of price, reimbursement and volume controls. These cost-containment measures are not necessarily in accordance with a health economic approach. This paper suggests the scope for better implementation of pharmacoeconomic evaluation, which can lead to more flexible reimbursement systems in specific indications. Therefore, a formal recognition of the role of objective economic evaluations is needed for both hospital and ambulatory care. This process should be proceeded by improving the understanding and robustness of pharmacoeconomic evaluations.

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