It does say it’s from 2600 providers spread across the 50 states. And the numbers are then based off of that not so random sample. I’m sure they took steps to get a good representative sample as best they could.
It is an interesting data set to use to support the hypothesis.
I’ve always felt this has been growing longer than we thought. The question is if it’s been here for so much longer, why did it take so long to reach and affect the high mortality risk patients?”