My Immortal Time Bias
Preamble: This shortie is my attempt to come up with an example that makes the problem underlying immortal time bias…
The 100% CI
Always confident. Sometimes credible.
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Reviewer notes: Odds ratios are really odd
When psychological researchers investigate binary outcomes,[1]For example, hit vs. miss, correct vs. incorrect, diagnosis vs. no diagnosis, donated vs. didn’t…
Friends don’t let friends run moderated cross-country regressions
Header image: Moderate cross-country slopes (Photo: By Erik W. Kolstad – Flickr, CC BY 2.0,) Here’s a particular genre of…
Science needs downvotes
A bug bounty module in grants would give criticism a leg up The Soviet Union was good at producing shoes.…
Think inside the box, part 1: The guy Euclidean distance told you not to worry about
Romance could be so simple if only we were two-dimensional. You just find the closest available partner and go for…
One approach to the age-period-cohort problem: Just don’t.
Just to cause yourself more problems, you seek for something. But there is no need for you to seek anything.…
If you have two measures of the same confounder, you can just include both of them in your regression model
Corrigendum: There was an embarrassing mistake in the SEM part of the original version of this blog post which has…
What’s in a correlation?
Correlation may not imply causation, but let’s just ignore that for a second. Correlations are standardized effect size metrics and…
Reviewer notes: So you’re interested in “lagged effects.”
In some fields, researchers who end up with time series of two variables of interest (X and Y) like to…
Reviewer notes: That’s a very nice mediation analysis you have there. It would be a shame if something happened to it.
Mediation analysis has gotten a lot of flak, including classic titles such as “Yes, but what’s the mechanism? (Don’t expect…