Identifying Strong StudiesFeb 11, 2020
No research soapbox today
My literal life goal is to bring research to the real world (always has been).
And I do realize that most people have zero formal training on how to sift through the available research.
Today I want to share a little about how to do so.
This pyramid 🔺 presents the various levels of evidence you can find in published research studies.
As you move from top to bottom, the AMOUNT of evidence increases, but the QUALITY decreases.
SO, STARTING FROM THA TOP...
a formal, systematic and structured approach to review all the relevant literature (aka remove poorly done studies) on a topic (e.g. how many studies have used certain methods, where they were carried out, etc.)
combines the numerical results from all relevant literature studies in a new statistical framework to test hypotheses.
^^ these are often put together.
◾️Randomized Controlled Trials (RCTs):
randomly assign participants into an experimental group (receive what is being tested) or a control group(s) (receive no treatment or perhaps a placebo) that the experimental group is compared to.
One or more groups of people with a similar characteristic (e.g. birth year) are followed over time to determine what risk factors are associated with a certain outcome (e.g. obesity).
Compares one group of people with a certain outcome (e.g. with obesity) to a group without it and looks back in time to compare risk factors (e.g. exercise frequency).
Describes an individual case (often used with unique/rare conditions or difficult to study)
▪️Background info/Expert opinion:
Anecdotal evidence, your fave #fitspo advice (if you can confidently call them experts).
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