| Ref ID | 266 |
| First Author | H. Tsujimoto |
| Journal | BMC RESEARCH NOTES |
| Year Of Publishing | 2017 |
| URL | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5717810/pdf/13104_2017_Article_3043.pdf |
| Keywords |
• Publication bias • Protocols • General medical • Currency |
| Problem(s) |
• Unpublished or "zombie" reviews (the file-drawer effect) |
| Article Type | Empirical |
| Article Subtype | Survey/questionnaire of authors opinions/practices |
| First Author Country | Japan |
| Aim | To assess the publication status of registered systematic reviews in the first year that PROSPERO launched (Feb 2011-Feb 2012) and to assess the association between publication and the existence of funding or conflicts of interest. |
| Level of Investigation | Descriptive |
| Summary of Findings | From the 326 protocols published in PROSPERO, 26%) remained unpublished at least 65 months after registration. Median time to publication from protocol registration was 16.3 months. Funding for systematic reviews was associated with publication [odds ratio (OR) = 2.10; 95% confidence interval (CI) = 1.26 to 3.50]. There was no significant association of author-reported conflicts of interest with publication (OR = 2.35; 95% CI = 0.67 to 8.20). Twenty systematic reviews were not published despite the authors reporting completion of the reviews in PROSPERO. |
| Number of systematic reviews included | 326 |
| Number of eligible systematic reviews assessed | 326 |
| Treatment impacted | No |
| Treatment impacted description | |
| Interpretation impacted | Not Applicable |
| Interpretation impacted description |