You see this to an even more extreme degree amongst the ultra rich and powerful, who are often using cutting edge, experimental treatments, and often reaping the downsides of being on that edge (though of course also the upsides).
Edit: Seems the lead author is also a vocal supporter of universal healthcare, being a senior fellow of the Center for American Progress. So yeah, probably why it's such a strange setup, and what compelled me to check since this kind of thing is super common for "activist research".
I guess the takeaway is to always take a study for what it is, rather than what it paints itself to be.
- infant mortality
- maternal mortality
- colon and breast cancer survival
- heart attack mortality
- childhood acute lymphocytic leukemia (most common childhood cancer)
Those are one of the most common health issues.
Also, here is another recent paper showing how it’s better (health care wise) to be average in EU than wealthy in US: https://www.nejm.org/doi/full/10.1056/NEJMsa2408259
There are also other oddities like using median county wealth rather than household wealth. In many wealthy counties there are still poor areas, I know more than a few. In fact if you look at the appendix, most of the households in the study are, well, average or poor. They also don't include absolute numbers or definitions for the illnesses.
All in all, it's a bad study, and clearly made to color in an agenda.
The second study looks more grounded, thanks.