lukestein’s Twitter Archive—№ 1,255

Important PSA: @Stata supports multiple missing values (not just “.” but also e.g., “.a”). Using “!=.” as a test for nonmissing values is NOT robust and is asking for trouble! (Using the popular “<.” is even worse.) PLEASE always use “~missing(•)” (even in joke tweets 😉) @causalinf/1089187721774579713