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- W4296418336 abstract "Objectives The purpose of this study was to conduct a methodological review of research on the effects of conflicts of interest (COIs) in research contexts. Design Methodological review. Data sources Ovid. Eligibility criteria Studies published between 1986 and 2021 conducting quantitative assessments of relationships between industry funding or COI and four target outcomes: positive study results, methodological biases, reporting quality and results–conclusions concordance. Data extraction and synthesis We assessed key facets of study design: our primary analysis identified whether studies stratified industry funding or COI variables by magnitude (ie, number of COI or disbursement amount), type (employment, travel fees, speaking fees) or if they assessed dichotomous variables (ie, conflict present or absent). Secondary analyses focused on target outcomes and available effects measures. Results Of the 167 articles included in this study, a substantial majority (98.2%) evaluated the effects of industry sponsorship. None evaluated associations between funding magnitude and outcomes of interest. Seven studies (4.3%) stratified industry funding based on the mechanism of disbursement or funder relationship to product (manufacturer or competitor). A fifth of the articles (19.8%) assessed the effects of author COI on target outcomes. None evaluated COI magnitude, and three studies (9.1%) stratified COI by disbursement type and/or reporting practices. Participation of an industry-employed author showed the most consistent effect on favourability of results across studies. Conclusions Substantial evidence demonstrates that industry funding and COI can bias biomedical research. Evidence-based policies are essential for mitigating the risks associated with COI. Although most policies stratify guidelines for managing COI, differentiating COIs based on the type of relationship or monetary value, this review shows that the available research has generally not been designed to assess the differential risks of COI types or magnitudes. Targeted research is necessary to establish an evidence base that can effectively inform policy to manage COI." @default.
- W4296418336 created "2022-09-20" @default.
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- W4296418336 date "2022-09-01" @default.
- W4296418336 modified "2023-10-14" @default.
- W4296418336 title "Evidence for stratified conflicts of interest policies in research contexts: a methodological review" @default.
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- W4296418336 doi "https://doi.org/10.1136/bmjopen-2022-063501" @default.
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