baselineMethod write-ups, full records from the cohort, and what the benchmark turns up. We publish the analyses that did not settle alongside the ones that did.
Three randomised trials, 151 people, and a headline result that does not survive contact with the second outcome. Why magnesium is our worked example — and why that is not an endorsement.
Across six wrist wearables scored against polysomnography, deep-sleep estimates ran from 25 minutes short to 44 minutes long. The effects people chase are smaller than that. Here is why within-person tracking still works.
A p-value does not tell you how large an effect is, or how sure you should be. The American Statistical Association said so plainly in 2016. Here is what we report instead, and what it costs us.
Your own 62 nights are not enough on their own. The population average is not about you. Hierarchical models sit in between — and the literature is specific about where they break.
Every system we tested infers causation from correlation somewhere. Here is where each one breaks, and how we score calibration.