Article ; Online: The cost-effectiveness of metformin in the US diabetes prevention program trial: Simple interpretations need not apply.
2023 Volume 178, Page(s) 107819
Abstract: Based on previously published US Diabetes Prevention Program (DPP) cost-effectiveness analyses (CEAs) metformin continues to be promoted as "cost-effective." We review the DPP within-trial CEA to assess this claim. Treatment alternatives included placebo ...
Abstract | Based on previously published US Diabetes Prevention Program (DPP) cost-effectiveness analyses (CEAs) metformin continues to be promoted as "cost-effective." We review the DPP within-trial CEA to assess this claim. Treatment alternatives included placebo (plus standard lifestyle advice), branded metformin and individual lifestyle modification. We added generic metformin as an alternative. Original published CEA data were taken as given and re-analyzed according to accepted principles for calculating incremental cost-effectiveness ratios (ICERs) in the economic evaluation field. With more than two treatments as in the DPP, these require attention to the rankings of interventions according to cost or effect prior to stipulating appropriate ICERs to calculate. With proper ICERs neither branded nor generic metformin was cost-effective, regardless of the value assumed for the willingness to pay for the quality-adjusted life year outcome assessed. Metformin alternatives were technically inefficient compared to placebo or the lifestyle modification alternative. Net loss calculations indicated substantial costs/health losses to using metformin instead of the optimal lifestyle alternative in response to metformin having been inaccurately labelled "cost-effective" in the original CEA. That CEA and subsequent analyses and citations of such analyses continue to claim that both metformin and lifestyle modification are cost-effective in diabetes prevention based on DPP data. Using metformin implies substantial costs and health losses compared to the cost-effective lifestyle modification. It may be that metformin has a role in cost-effective diabetes prevention, but this has yet to be shown based on DPP data. |
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MeSH term(s) | Humans ; Metformin/therapeutic use ; Hypoglycemic Agents/therapeutic use ; Diabetes Mellitus, Type 2/drug therapy ; Diabetes Mellitus, Type 2/prevention & control ; Cost-Benefit Analysis ; Life Style |
Chemical Substances | Metformin (9100L32L2N) ; Hypoglycemic Agents |
Language | English |
Publishing date | 2023-12-11 |
Publishing country | United States |
Document type | Review ; Journal Article |
ZDB-ID | 184600-0 |
ISSN | 1096-0260 ; 0091-7435 |
ISSN (online) | 1096-0260 |
ISSN | 0091-7435 |
DOI | 10.1016/j.ypmed.2023.107819 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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