The Centre for Evidence-Based Medicine develops, promotes and disseminates better evidence for healthcare.
Evidence-based thinking and why it matters
Views expressed may represent the views of the author and not necessarily those of CEBM as a group
How do you calculate a standard error of a beta coefficient?
What can you do when a study reports a beta coefficient instead of a hazard ratio?
Bavidra Kulendrarajah & Adam Grey
The combination of these two outcomes has made this a really worthwhile experience, and one we would highly recommend to our colleagues considering where to spend their time on the special studies module.
The range of approaches to meta-synthesis has proliferated over recent decades…
Veronika Williams, Anne-Marie Boylan, David Nunan
Why we need to reshape critical appraisal and develop tools that allow differentiated evaluations of the myriad of qualitative methodological approaches
I’ll look at a different study design, prognostic studies, and consider a problem with extracting hazard ratios, relative risks and odds ratios. I’ll focus on hazard ratios, but my tip will also apply to relative risks and odds ratios.
Logarithms (frequently referred to as ‘logs’) are often used in statistics.
Most of the research on the way that bacterial skin infections present in older adults has been performed in hospital–based studies. Together with a team of researchers at the Nuffield Department of Primary Care Health Sciences, Oxford, we decided to find out what research has been done in this area in the community setting so that the findings would be relevant to GPs.
What if the sensitivity or specificity is also not reported?
Stephanie Tierney and Kamal R Mahtani
Systematic reviews of quantitative research are a staple of decision-making for those providing and commissioning services.
What if the prevalence is also not reported?
Getting the health outcomes we want depends on how we allocate and use the resources available…
Marie, Chair of the Association for Children Damaged by Hormone Pregnancy Tests, responds to the publication of a systematic review on oral hormone pregnancy tests and the risks of congenital malformations.
What can you do if the 2×2 classification table in a diagnostic accuracy study is not reported?
A new blog series offering tips for data extraction.