… Peter Gøtzsche compares results from two publications that used different dates for the end
of … On Gøtzsche’s last point, the 82 women never invited referred to in our earlier paper1 were …

Flaws in the design, conduct, analysis, and reporting of randomised trials can cause the
effect of an intervention to be underestimated or overestimated. The Cochrane Collaboration’s …

In 2000, we reported that there is no reliable evidence that screening for breast cancer reduces
mortality. As we discuss here, a Cochrane review has now confirmed and strengthened …

Systematic reviews and meta-analyses are essential to summarize evidence relating to
efficacy and safety of health care interventions accurately and reliably. The clarity and …

The PRISMA statement is a reporting guideline designed to improve the completeness of
reporting of systematic reviews and meta-analyses. Authors have used this guideline …

Much medical research is observational. The reporting of observational studies is often of
insufficient quality. Poor reporting hampers the assessment of the strengths and weaknesses …

The protocol of a clinical trial serves as the foundation for study planning, conduct, reporting,
and appraisal. However, trial protocols and existing protocol guidelines vary greatly in …

Much biomedical research is observational. The reporting of such research is often
inadequate, which hampers the assessment of its strengths and weaknesses and of a study's …

… Deeks, PJ Devereaux, Kay Dickersin, Matthias Egger, Edzard Ernst, Peter C. GøtzscheJeremy
Grimshaw, Gordon Guyatt, Julian Higgins, John PA Ioannidis, Jos Kleijnen, Tom Lang …

Much biomedical research is observational. The reporting of such research is often
inadequate, which hampers the assessment of its strengths and weaknesses and of a study's …