Background Clinical trial registries can improve the validity of trial results by facilitating
comparisons between prospectively planned and reported outcomes. Previous reports on …

Background Most publications about selective reporting in clinical trials have focussed on
outcomes. However, selective reporting of analyses for a given outcome may also affect the …

Background Prospective study protocols and registrations can play a significant role in
reducing incomplete or selective reporting of primary biomedical research, because they are …

Importance Primary outcome change could threaten the validity of a clinical trial; however,
evidence about the consequences on the reported intervention effect size is unclear …

Background Selective outcome reporting of either interesting or positive research findings is
problematic, running the risk of poorly-informed treatment decisions. We aimed to assess the …

Clinical trial data are essential for assessments of the effectiveness of health care
interventions. Information about ongoing or completed, but not yet formally published, trials …

Objective The use of reporting guideline is directed at enhancing the completeness and
transparency of biomedical publications. The aims of this paper are to present some of the …

Abstract Background/Purpose Determining the appropriate sample size is an integral
component of any well-designed research study, grant application, or scientific manuscript …

Summary Background/Objectives The aim of this study was to identify outcome-related
discrepancies between registry trial entries and final published reports in orthodontic …

Background Studies measuring the completeness and consistency of trial registration and
reporting rely on linking registries with bibliographic databases. In this systematic review, we …