They do adjust for area wealth / deprivation etc. Even then I wonder if the "UV radiation" is just proxy for living up North and in cities, both of which lead t

They do adjust for area wealth / deprivation etc. Even then I wonder if the "UV radiation" is just proxy for living up North and in cities, both of which lead to less solar irradiation and generally poorer health outcomes. E.g. healthcare coverage, unemployment, access to education etc. all get worse along a north-south axis.