Abstract :
Pharmacoeconomic analysis must determine a credible cost model, including healthcare-related, non-healthcare-related, and intangible costs, and must identify important treatment outcomes. Outcomes can be ranked in terms of their sensitivity to different treatments or weighted in terms of cost. Two recent studies of community-acquired lower respiratory tract infection have shown that inadequate treatment is a frequent cause of repeat visits to the physicianʹs office, involving extra costs that could presumably be avoided by more effective first-line treatment. When economic data are to be incorporated into clinical trials, it is important to collect data outside as well as within the trial center and to concentrate on data likely to be of significance to the decision makers the trial is designed to influence. The best way of achieving internal validity in such trials is through randomization, which minimizes bias, chance imbalance, and confounding factors. The three major determinants of the cost-effectiveness of treatment are efficacy, the value attached to preventing treatment failure, and the accuracy of diagnosis. The latter is important because a drug can only benefit patients if they have the disease for which it is an effective treatment.
