benkuhn comments on LW survey: Effective Altruists and donations - Less Wrong Discussion
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Given that at least 25% of respondents listed $0 in charity, the offset you add to the charity ($1 if I understand
log1pcorrectly) seems like it could have a large effect on your conclusions. You may want to do some sensitivity checks by raising the offset to, say, $10 or $100 or something else where a respondent might round their giving down to $0 and see if anything changes.Gwern has a point that it's pretty trivial to run this robustness check yourself if you're worried. I ran it. Changing the $1 to $100 reduces the coefficient of EA from about 1.8 to 1.0 (1.3 sigma), and moving to $1000 reduces it from 1.0 to 0.5 (about two sigma). The coefficient remains highly significant in all cases, and in fact becomes more significant with the higher constant in the log.