The results of around half of all clinical trials have never been published. Failing to publish results means the people who make decisions about medicines don’t have full information about the benefits and risks of treatments we use every day.

Use The Economist’s publication bias simulator to run clinical trials yourself, decide which trials to publish, and see how much your decision to withhold results skews the medical evidence.


Read full coverage in The Economist: Trials and errors – The evidence base for new medicines is flawed. Time to fix it