A short term cost-effectiveness model for oral antidiabetic medicines in Europe

A short term (6-month) cost-effectiveness model has been developed to simulate current medical practice and disease progression in patients with type 2 (non-insulin-dependent) diabetes mellitus uncontrolled by diet and exercise. The model is based on decision-analytical techniques and includes probabilities of switching between treatments, the reason for the switch and the most common switch options. Effectiveness and economic measures are the 2 main outcomes. In order to assess effectiveness, we use symptom-free days with acceptable control (SFDACs), which represent each day of treatment without adverse events or symptoms, and with acceptable control of glucose and lipids. For the economic evaluation, only incremental costs incurred directly by a health insurance system are considered. This model should prove useful in the evaluation of new oral antidiabetic agents, since the short term aim of antidiabetic therapy is to provide adequate control in the absence of adverse effects and symptoms (a prerequisite for successful long term treatment). Furthermore, short term analysis provides data for comparing initial investment in drag therapy with potential savings over a longer treatment period.

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