No, it’s not reliable.
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They pulled from a ten year old book which pulled it from a 18 year old self reported survey—whose results were doubled to make them line up with alcohol sales. It’s bad info. This distribution would put a significant number of people at over 250gms of ethanol a day.
Yup. Assuming each of these deciles underreported by the same magnitude is very hard to justify. Not hard to believe the 20% who reported a ("moderate"-sounding) few drinks per week are off by 2-3x+; it seems likely those willing to admit excessive drinking were a bit more honest
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Exactly, doing it by a constant correction coefficient also assumes that everyone who says they don’t drink is telling the truth, but everyone that claims to drink is underreporting by half.
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When you don’t drink every week and you get asked how many drinks you drink per week, it’s difficult to know the accurate figure. I know I give it a wild guess.
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