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The strong focus on positive results in abstracts may cause bias in systematic reviews: a case study on abstract reporting bias.
Duyx B, Swaen GMH, Urlings MJE, Bouter LM, Zeegers MP. Duyx B, et al. Syst Rev. 2019 Jul 17;8(1):174. doi: 10.1186/s13643-019-1082-9. Syst Rev. 2019. PMID: 31315665 Free PMC article.
CONCLUSIONS: This case study on abstract reporting bias shows that (a) more than half of all relevant articles were missed by a conventional search query and (b) this led to an overestimation of the pooled effect. Detection of articles will be improved if all studied expos …
CONCLUSIONS: This case study on abstract reporting bias shows that (a) more than half of all relevant articles were missed by a conventional …