'Spin' among abstracts of randomised controlled trials in sleep medicine: A research-on-research study.

Study Objectives: 'Spin', using reporting strategies to distort study results, can mislead readers of medical research. This study aimed to evaluate the prevalence and characteristics of 'spin' among randomised controlled trial (RCT) abstracts published in sleep medicine journals, and to identify factors associated with its presence and severity.

Methods: The search for RCTs published between 2010 and 2020 were conducted in seven reputable journals of sleep medicine.

The reporting and methodological quality of split-mouth trials in oral implantology: A methodological study.

Objectives: The objective of this study is to assess the reporting and methodological quality of split-mouth trials (SMTs) in oral implantology published during the past 10 years, and to investigate whether there was any improvement over time.

Materials And Methods: We searched PubMed for SMTs in oral implantology published during 2011-20. We used CONSORT 2010, its extension for within-person trial (WPT), and an SMT-specific methodological checklist to assess trial reporting quality (TRQ), WPT-specific reporting quality (WRQ), and SMT-specific methodological quality (SMQ), respectively.