16/n It may be possible to do a rigorous cost/benefit of school closures, but I really don't see how this can be considered one
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27/n You see, Lleras-Muney compiled an estimate based on a number of factors on the reduction in risk from 1 year of extra schooling. Mazumder, three years later, took that same database and re-analyzed it considering additional factors, and estimated a lower reductionpic.twitter.com/2pWUNsP6Qb
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28/n However you slice it, it's inappropriate to just bung these two estimates together into a model and treat them as separate. I would argue that the Mazumder paper is probably a better estimate, but either way what they've done here is wrong
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29/n If I re-run the meta-analysis they've purported to use with the correct numbers, we end up with this graph instead. A relative reduction in risk of death of 5% for every year of schooling This is A QUARTER of the estimate used in the studypic.twitter.com/xQk5F1tDzT
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30/n So AT BEST assuming there are no other errors, the estimate of the years of life lost due to school closures should be divided by 5
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This type of stuff makes me mad when I have manuscripts rejected or much less.
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post-pub peer-review THREAD
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