Discrepancies in Outcome Reporting Exist Between Protocols and Published Oral Health Cochrane Systematic Reviews


Autoria(s): Pandis, Nikolaos; Fleming, Padhraig S; Worthington, Helen; Dwan, Kerry; Salanti, Georgia
Data(s)

2015

Resumo

OBJECTIVES To assess discrepancies in the analyzed outcomes between protocols and published reviews within Cochrane oral health systematic reviews (COHG) on the Cochrane Database of Systematic Reviews (CDSR). STUDY DESIGN AND SETTING All COHG systematic reviews on the CDSR and the corresponding protocols were retrieved in November 2014 and information on the reported outcomes was recorded. Data was collected at the systematic review level by two reviewers independently. RESULTS One hundred and fifty two reviews were included. In relation to primary outcomes, 11.2% were downgraded to secondary outcomes, 9.9% were omitted altogether in the final publication and new primary outcomes were identified in 18.4% of publications. For secondary outcomes, 2% were upgraded to primary, 12.5% were omitted and 30.9% were newly introduced in the publication. Overall, 45.4% of reviews had at least one discrepancy when compared to the protocol; these were reported in 14.5% reviews. The number of review updates appears to be associated with discrepancies between final review and protocol (OR: 3.18, 95% CI: 1.77, 5.74, p<0.001). The risk of reporting significant results was lower for both downgraded outcomes [RR: 0.52, 95% CI: 0.17, 1.58, p = 0.24] and upgraded or newly introduced outcomes [RR: 0.77, 95% CI: 0.36, 1.64, p = 0.50] compared to outcomes with no discrepancies. The risk of reporting significant results was higher for upgraded or newly introduced outcomes compared to downgraded outcomes (RR = 1.19, 95% CI: 0.65, 2.16, p = 0.57). None of the comparisons reached statistical significance. CONCLUSION While no evidence of selective outcome reporting was found in this study, based on the present analysis of SRs published within COHG systematic reviews, discrepancies between outcomes in pre-published protocols and final reviews continue to be common. Solutions such as the use of standardized outcomes to reduce the prevalence of this issue may need to be explored.

Formato

application/pdf

Identificador

http://boris.unibe.ch/79156/1/Discrepancies%20in%20Outcome%20Reporting.pdf

Pandis, Nikolaos; Fleming, Padhraig S; Worthington, Helen; Dwan, Kerry; Salanti, Georgia (2015). Discrepancies in Outcome Reporting Exist Between Protocols and Published Oral Health Cochrane Systematic Reviews. PLoS ONE, 10(9), e0137667. Public Library of Science 10.1371/journal.pone.0137667 <http://dx.doi.org/10.1371/journal.pone.0137667>

doi:10.7892/boris.79156

info:doi:10.1371/journal.pone.0137667

info:pmid:26368938

urn:issn:1932-6203

Idioma(s)

eng

Publicador

Public Library of Science

Relação

http://boris.unibe.ch/79156/

Direitos

info:eu-repo/semantics/openAccess

Fonte

Pandis, Nikolaos; Fleming, Padhraig S; Worthington, Helen; Dwan, Kerry; Salanti, Georgia (2015). Discrepancies in Outcome Reporting Exist Between Protocols and Published Oral Health Cochrane Systematic Reviews. PLoS ONE, 10(9), e0137667. Public Library of Science 10.1371/journal.pone.0137667 <http://dx.doi.org/10.1371/journal.pone.0137667>

Palavras-Chave #610 Medicine & health
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

PeerReviewed