Negative selection and instrumental variables
Highly active antiretroviral treatments, HIV and AIDS, and American healthcare quirks
Selection bias
As I work on the revision to the Mixtape, I am finding myself remembering with fresh eyes old papers I haven’t thought of in years. What is selection bias exactly? To many of those who don’t obsess over causality, selection bias is associated with non representative samples of data. For instance, if I interview the first 100 people I mee…
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