Do we know if she took into account population migration / movement? Looking at the description it doesn't look like it, but I'd be really curious to see how t

Do we know if she took into account population migration / movement? Looking at the description it doesn't look like it, but I'd be really curious to see how that affects the stat. Or how the stat changes if the zip code is tied to the person's DOB. In that scenario it probably drops a lot, because (I'm assuming) most people are born in a hospital, and there isn't a hospital in every zip code. So to my first comment on population movement, maybe that's actually a representation of the effect of population migration / movement. Cool.