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[Tracking] States with questionable county-level testing data (currently disabled from CAN usage) #138

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mikelehen opened this issue Nov 10, 2020 · 1 comment

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@mikelehen
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mikelehen commented Nov 10, 2020

We disabled the county-level testing data from Covid County Data for the following states due to discrepancies when compared to the PCR Test Specimen-based test positivity data from Centers for Medicare & Medicaid Services: "AL", "DE", "FL", "IN", "IA", "MD", "ND", "NE", "PA", "RI", "WI"

Possible issues with the CCD data:

  • Represents unique people tested instead of test specimens or similar. (I think this applies to AL, DE, FL, and maybe IN, PA, WI)
  • There was no "positive_tests_total" data and so we used "cases_total" as the numerator, which sometimes includes probable tests and therefore inflates the numerator. (possibly true for AL, IA, MD)

More detailed comparison notes (possibly too stale / subjective to be very useful) found here: https://docs.google.com/spreadsheets/d/1fvgUxiGTKkPOI3mUaeKgdEZ530jm0xzrIgQXt9LFerY/edit#gid=0

Note that the data is hard to compare directly since CMS provides a 14d test positivity percent rather than raw positive / total test numbers. So the comparison was somewhat subjective.

@sglyon
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sglyon commented Nov 10, 2020

Thanks for this. We'll be able to be much more precise about what testing data is being collected once v2 of the database schema is up and running.

We'll look back at this as a reference once that is live

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