Does income modify life expectancy?

In Norway the income gap reflects life expectancy, just like the U.S.--in fact, practically the same. People in the lowest 1% don't live as long as those in the top 1%. What I don't see in the study is 200-300 different ethnicities and cultures in Norway and mass immigration like we have in the U.S. For the most part they are of the same northern European stock, have a thicker social welfare safety net, and are mono-cultural. This really tosses out the socio-racial causes of income gaps we see in many U.S. studies. There are enough people in the U.S. of Scandinavian heritage to just look at that segment, lowest and highest income. And Scandinavian Americans do very well, but are below Indian-Americans and Filipino-Americans in income.

https://edhub.ama-assn.org/jn-learning/module/2733322?

May 13, 2019. doi:10.1001/jama.2019.4329