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No. What they actually do is that they do a regression with both X and Z among the independent variables, and then look solely at the coefficients coming from
by Sniffnoy 2y ago
No. What they actually do is that they do a regression with both X and Z among the independent variables, and then look solely at the coefficients coming from X. (As mentioned in the article.) Including Z as a dependent variable alongside X "controls for" it in that now the coefficients for X are supposed to not include any effect from Z (since any Z effect should go in the Z coefficients). How well this works is something I don't know enough to answer.
I don't actually know how the method you suggest compares in the limit of finer bins. It's possible it might only achieve similar results?
- KempyKolibri 2y agoThe smaller bins approach is adjustment via stratification. Good primer on both here: https://www.mynutritionscience.com/p/statistical-adjustment https://www.mynutritionscience.com/p/statistical-adjustment
- youainti 2y agoMy understanding is that in the limit, it does the same thing, but with more of a flattened tree representation.