@_Kodos_ @humftydrumpfty @DrTomFrieden If you look at a multivariate study such as this one, both NPIs and density can appear as significant correlations.
https://twitter.com/joe_sill/s...
@_Kodos\uuU@humftydrumpfty@DrTomFrieden如果你看一个多变量研究，比如这一个，NPI和密度都可以显示为显著的相关性。
https://twitter.com/joe_sill/s...