On: Adequate Vitamin D Levels Cuts Risk of Dying from ...

[tpmx]

Background to this comment: Vitamin D is commonly artifically added to milk.

[pbhjpbhj → tpmx]

I'd imagine this varies by country, and that should give relatively easy statistical comparisons?

[tpmx → pbhjpbhj]

After spending the past 7 months as an amateur statistician I have found that nothing is easy when you want compare different countries.

[mhh__ → tpmx]

Comparing within the EU is fairly OK.

Testing a hypothesis like the above could be easier if you remember that the US can be divided up like the EU too - that way you have fairly geographically sparse but hopefully methodologically similarly recorded data.

[Fnoord → mhh__]

> Comparing within the EU is fairly OK.

The company I work at do data analysis on COVID-19. We cannot compare within EU as of now; only within the country. Even then, data (e.g. from hospitals) needs to be "standardized".