title: Economic analysis alongside clinical trials. Bias in the assessment of economic outcomes.
abstract: Clinical trial randomization schemes to control patient characteristics that can influence clinical response are not sufficient to control for their effects on operational efficiency and cost within the provider institution. This variation can result in biased economic findings when patients are allowed to select a provider themselves.
authors.affiliation: University of York.
authors.forename: L B
authors.initials: LB
authors.lastname: Ellwein
authors.forename: M F
authors.initials: MF
authors.lastname: Drummond
mesh_terms: D015982:Bias; D017048:Health Care Costs / Q000706:statistics & numerical data*; D006302:Health Services Research / Q000379:methods*; D006801:Humans; D017063:Outcome Assessment, Health Care / Q000191:economics*; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D012107:Research Design