The nature and influence of pharmaceutical industry involvement in asthma trials
- PMID: 22891187
- PMCID: PMC3411392
- DOI: 10.1155/2012/890457
The nature and influence of pharmaceutical industry involvement in asthma trials
Abstract
Background: Pharmaceutical industry-sponsored research has been shown to be biased toward reporting positive results. Frequent industry participation in trials assessing the efficacy of inhaled corticosteroid (ICS) and long-acting beta<span style="vertical-align: sub">2<⁄span>-agonist (LABA) combination treatment makes assessing industry influence difficult and warrants an assessment of specific potential publication bias in this area.
Objective: To describe the frequency of industry involvement in ICS⁄LABA trials and explore associations among significant outcomes, type of industry involvement and type of primary outcome.
Methods: A systematic review of trials comparing ICS⁄LABA combination therapy with ICS monotherapy for asthma was conducted. Data concerning the type of industry sponsorship, primary outcome and statistical results were collected. Comparisons between type of sponsorship and significant results were analyzed using Pearson's chi squared test and relative risk.
Results: Of 91 included studies (median year of publication 2005 [interquartile range 1994 to 2008]), 86 (95%) reported pharmaceutical involvement. Author affiliation was reported in 49 of 86 (57%), and 19 of 86 (22%) were industry-reported trials without full publications. The remainder were published journal articles. Studies with a first or senior author affiliated with industry were 1.5 times more likely to report statistically significant results for the primary outcome compared with studies with other types of industry involvement. Pulmonary measures were 1.5 times more likely to be statistically significant than were measures of asthma control.
Conclusions: The potential biases identified were consistent with other research focused on author role and industry involvement, and suggest that degree of bias may vary with type of affiliation.
HISTORIQUE :: Il a été démontré que la recherche commanditée par l’industrie pharmaceutique a un parti pris pour des résultats positifs. En raison de la participation fréquente de l’industrie à des essais évaluant l’efficacité de la bithérapie de corticoïdes en aérosol (CEA) et de bêta2-agonistes de longue durée (BALD), il est difficile d’évaluer l’influence de l’industrie, ce qui justifie une évaluation des partis pris potentiels précis à ce sujet dans les publications.
OBJECTIF :: Décrire la fréquence de la participation de l’industrie aux essais des CEA-BALD et explorer les associations entre les issues significatives, le type de participation de l’industrie et le type d’issues primaires.
MÉTHODOLOGIE :: Les chercheurs ont effectué une analyse systématique des essais comparant la bithérapie de CEA-BALD à une monothérapie aux CEA contre l’asthme. Ils ont colligé les données portant sur le type de commandite de l’industrie, les issues cliniques et les résultats statistiques. Ils ont analysé les comparaisons entre le type de commandite et les résultats significatifs au moyen de la méthode du khi-carré de Pearson et du risque relatif.
RÉSULTATS :: Sur les 91 études incluses (année médiane de publication : 2005 [plage interquartile de 1994 à 2008]), 86 (95 %) indiquaient une participation pharmaceutique. L’affiliation des auteurs était indiquée dans 49 de ces 86 études (57 %), et 19 des 86 études (22 %) étaient des essais déclarés par l’industrie sans publications complètes. Les autres étaient des articles publiés dans des revues. Les études dont l’auteur principal ou un auteur chevronné était associé à l’industrie étaient 1,5 fois plus susceptibles de faire état de résultats statistiquement significatifs à l’égard de l’issue primaire que les études profitant d’autres types de participation de l’industrie. Les mesures pulmonaires étaient également 1,5 fois plus susceptibles d’être statistiquement significatives que les mesures de contrôle de l’asthme.
CONCLUSIONS :: Les partis pris potentiels confirmaient d’autres études portant sur le rôle de l’auteur et la participation de l’industrie et laissent croire que le degré de parti pris peut varier selon le type d’affiliation.
Figures
Similar articles
-
Systematic review and economic analysis of the comparative effectiveness of different inhaled corticosteroids and their usage with long-acting beta2 agonists for the treatment of chronic asthma in adults and children aged 12 years and over.Health Technol Assess. 2008 May;12(19):iii-iv, 1-360. doi: 10.3310/hta12190. Health Technol Assess. 2008. PMID: 18485271
-
Systematic review and economic analysis of the comparative effectiveness of different inhaled corticosteroids and their usage with long-acting beta2 agonists for the treatment of chronic asthma in children under the age of 12 years.Health Technol Assess. 2008 May;12(20):1-174, iii-iv. doi: 10.3310/hta12200. Health Technol Assess. 2008. PMID: 18485272
-
Long-acting muscarinic antagonists (LAMA) added to combination long-acting beta2-agonists and inhaled corticosteroids (LABA/ICS) versus LABA/ICS for adults with asthma.Cochrane Database Syst Rev. 2016 Jan 21;2016(1):CD011721. doi: 10.1002/14651858.CD011721.pub2. Cochrane Database Syst Rev. 2016. PMID: 26798035 Free PMC article.
-
Interventions to improve adherence to inhaled steroids for asthma.Cochrane Database Syst Rev. 2017 Apr 18;4(4):CD012226. doi: 10.1002/14651858.CD012226.pub2. Cochrane Database Syst Rev. 2017. PMID: 28417456 Free PMC article.
-
Combined corticosteroid and long-acting beta(2)-agonist in one inhaler versus long-acting beta(2)-agonists for chronic obstructive pulmonary disease.Cochrane Database Syst Rev. 2012 Sep 12;2012(9):CD006829. doi: 10.1002/14651858.CD006829.pub2. Cochrane Database Syst Rev. 2012. PMID: 22972099 Free PMC article.
Cited by
-
Industry sponsorship and research outcome.Cochrane Database Syst Rev. 2017 Feb 16;2(2):MR000033. doi: 10.1002/14651858.MR000033.pub3. Cochrane Database Syst Rev. 2017. PMID: 28207928 Free PMC article.
-
Anti-inflammatory dimethylfumarate: a potential new therapy for asthma?Mediators Inflamm. 2013;2013:875403. doi: 10.1155/2013/875403. Epub 2013 Mar 27. Mediators Inflamm. 2013. PMID: 23606796 Free PMC article. Review.
-
Publication practices and standards: recommendations from GSK Vaccines' author survey.Trials. 2014 Nov 18;15:446. doi: 10.1186/1745-6215-15-446. Trials. 2014. PMID: 25406766 Free PMC article.
-
Evidence for stratified conflicts of interest policies in research contexts: a methodological review.BMJ Open. 2022 Sep 19;12(9):e063501. doi: 10.1136/bmjopen-2022-063501. BMJ Open. 2022. PMID: 36123074 Free PMC article. Review.
-
A Content Analysis of Self-Reported Financial Relationships in Biomedical Research.AJOB Empir Bioeth. 2023 Apr-Jun;14(2):91-98. doi: 10.1080/23294515.2022.2160509. Epub 2022 Dec 28. AJOB Empir Bioeth. 2023. PMID: 36576202 Free PMC article.
References
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Medical