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A comment on SARS-CoV-2 positivity rates associated with circulating Vitamin D levels. Parent comment

Re:SARS-CoV-2 positivity rates associated with circulating V... by umanwizard on Saturday September 19, 2020 @03:22PM (#24529818)
I’m aware that race is not a strictly defined category, and that racial classification is arbitrary to a large extent. However, this doesn’t answer my question.
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Re:SARS-CoV-2 positivity rates associated with circulating V... by crispyporkbites on Saturday September 19, 2020 @03:42PM (#24529911)
It demonstrates the logical fallacy - if it's an arbitrary classification, as you say, how can those blood test groupings be accurate? They can, at best, be arbitrary
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Re:SARS-CoV-2 positivity rates associated with circulating V... by umanwizard on Saturday September 19, 2020 @07:51PM (#24531052)
“Arbitrary” doesn’t mean “uniformly random”. Even though the lines are blurred, there is still a strong correlation between being considered part of a particular racial classification in the US and having certain genes.
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