Carrying out a literature search can feel daunting when faced with the task. This blog introduces you to the main databases available to enable a comprehensive search of the medical literature.
A well-designed cohort study can provide powerful results. This blog introduces prospective and retrospective cohort studies, discussing the advantages, disadvantages and use of these type of study designs.
This is a Portuguese translation of the third in a series of 36 blogs explaining 36 Key Concepts we need to be able to understand to think critically about treatment claims. With thanks to Izabel Oliveira and Cochrane Brazil for the translation.
This blog explains that the fact that a treatment outcome (i.e. a potential benefit or harm) is associated with a treatment does not mean that the treatment caused the outcome.
Pain is a recurrent undesirable side effect in orthodontic treatment. This blog by Izabel Oliveira introduces pharmacological and non-pharmacological alternatives for orthodontic pain management.
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A beginner’s guide to standard deviation and standard error: what are they, how are they different and how do you calculate them?
When you see a claim that a treatment or intervention has no effect, it is important to examine the evidence as this may be a misleading statement.
This blog provides a detailed overview of the concept of ‘blinding’ in randomised controlled trials (RCTs). It covers what blinding is, common methods of blinding, why blinding is important, and what researchers might do when blinding is not possible. It also explains the concept of allocation concealment.