Timeline for Does a doubly robust estimator magnify bias if *both* the outcome regression and inverse propensity score weighting are incorrect models?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Dec 13, 2019 at 21:59 | vote | accept | RobertF | ||
| Sep 23, 2019 at 13:56 | answer | added | RobertF | timeline score: 1 | |
| Sep 13, 2019 at 0:53 | comment | added | jsk | 2010 ncbi.nlm.nih.gov/pubmed/23049119 is the original paper that contains the theoretical details. 2013 ncbi.nlm.nih.gov/pmc/articles/PMC3664333 is a bit easier to read. Supplemental proof to 2013 paper that proves double robustness ncbi.nlm.nih.gov/pmc/articles/PMC3664333/bin/…. The simulation results though that I was referring to from a presentation do not appear to be available online. | |
| Sep 12, 2019 at 20:56 | comment | added | RobertF | @jsh I'll have to read the paper, do you have a link? I need to work out the math for the expected value of the augmentation term - taking the expectation of the product of two random variables, where one variable is a fraction - is not straightforward math. :-p At any rate the DRE may not be as biased as I thought. | |
| Sep 12, 2019 at 19:04 | comment | added | jsk | My memory was incorrect. In the simulations, the bias for the DR estimator of the odds ratio was no worse than the worse of the two estimators of the odds ratio, but the coverage probability was a bit lower. | |
| Sep 12, 2019 at 15:55 | comment | added | RobertF | @jsk Perhaps a simple solution would be to expand the doubly robust estimator formula so that the augmentation terms are both added and subtracted from the expected values of $Y_1$ and $Y_0$? | |
| Sep 12, 2019 at 15:44 | history | asked | RobertF | CC BY-SA 4.0 |