Testing Treatments interactive
Promoting critical thinking about treatment claims
Gilbert Welch’s 9-min video on how 95% confidence intervals relate to p values.
Gilbert Welch’s 9-min video on how 95% confidence intervals relate to p values, and their value in interpreting so called ‘negative studies’.
Gilbert Welch’s 10-min video on p-values and assessing the likelihood that a difference between treatments is due to chance.
Regression to the mean can lead us to think that an intervention has been effective when it hasn't. This poem illustrates it nicely.
GET-IT provides plain language definitions of health research terms