Clinical trial information, free to read
A study is only as clear as the group it describes.
Cohorova explains how a research group is defined: who a study is looking for, how people are assigned to groups, and why those choices matter. We are a reading site. We do not run studies or tell anyone which one to join.
- 3 cohort notes to start
- 0 studies run or recruited for
- 0 details shared with sponsors
Start with a question
Who a study describes
Inclusion and exclusion rules, translated from the dense wording on a study listing.
Read the guideWhat a comparison means
Why some studies use a placebo and what that does and does not tell you.
Read the guideCohort Notes
1Who a study is forNear the top of nearly every study listing is a list of rules about who can take part. It reads like legal fine print, but it is really a description of the group the researchers want to learn from.6 min2Comparison groups and placebos
To tell whether something works, researchers need something to compare it to. That is the job of a comparison group, and sometimes of a placebo.7 min3Randomization explained
When a study says people are “randomized,” it means a chance process, not a person, decides who goes into which group.5 min