title: Some factors to consider when using the results of economic evaluation studies at the population level.
abstract: The cost-effectiveness of a medical intervention at the population level may deviate from that reported for evaluations at the patient level. It is important for researchers and decision makers to know about the relevance of externalities, phasing-in effects, treatment effectiveness in the community, capacity issues, and different time perspectives in the evaluation of an intervention.
authors.affiliation: University of Limburg.
authors.forename: R M
authors.initials: RM
authors.lastname: Leidl
mesh_terms: D003362:Cost-Benefit Analysis; D017048:Health Care Costs; D006801:Humans; D007564:Japan; D017063:Outcome Assessment, Health Care