this post was submitted on 31 Aug 2023
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New study: 12% of individuals are responsible for 50% of US beef consumption (www.mdpi.com)
submitted 1 year ago by [email protected] to c/[email protected]
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[–] [email protected] 117 points 1 year ago (6 children)

This is the same study posted somewhere else. The survey is flawed in that they asked what people ate in the last 24 hours.

That simply means that those people ate a lot in the last 24 hours. Should have been over a week or a month to get a better distribution.

“We analyzed 24-h dietary recall data from adults (n = 10,248) in the 2015–2018 National Health and Nutrition Examination Survey (NHANES).”

[–] [email protected] 21 points 1 year ago (1 children)

Exactly. In a world where people at a big steak dinner once a week, you’d see a similar result.

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

Why would everyone be eating the big steak dinner the day before they were asked this survey question though?

[–] Enkers 13 points 1 year ago* (last edited 1 year ago) (1 children)

I responded to your comment before, but didn't sufficiently think it through, so I deleted my previous response.

You raise a good point, and they do indeed acknowledge this flaw in the study:

One limitation of this work is that it was based on 1-day diet recalls, so our results do not represent usual intake. Averaging both days of data available on the NHANES would not address this problem, would reduce our sample size by 15%, and would mix recall methods between an in-person interview (day 1) and one done on the phone (day 2). Still, as a check, we examined day 2 and found the same associations with gender and MyPlate guidance.

[–] [email protected] 2 points 1 year ago

Yeah, I feel this is an early report to decide if a larger study is warranted

[–] [email protected] 4 points 1 year ago* (last edited 1 year ago)

I don't totally agree. I'd be interested in grouping the data by "response day of the week", but given that the sample size is 10k (which is huge in nutrition science) and that they didn't all respond at the same time, there's definitely enough response time variability to reduce short term seasonality.

Honestly if you asked over the previous week or month you'd probably just get less accurate responses and it'd skew the data even more.

[–] [email protected] 3 points 1 year ago

That's such a leading method for gathering the data. You just ate the one cheeseburger you have every couple of months right before the study? Welp, I guess you're the person responsible for all the beef purchases now!

[–] [email protected] -4 points 1 year ago (1 children)

If that was all that was flawed... who actually takes time to do nutritional surveys? People who care about nutrition. And the current fad is that you should eat less meat. So a disproportionate number of them are going to under represent how much meat they eat. So it should say, only 12% of people who answered this survey were honest.