Where are the actual income brackets? I clicked through the NPR article to the study itself and still can't find them. I also don't understand how self-reporte

Where are the actual income brackets? I clicked through the NPR article to the study itself and still can't find them. I also don't understand how self-reported health can be objectively valid for a study like this. E.g. if you believe you are healthy and never visit the doctor because you don't see a need to do so, but you have an undiscovered heart condition that causes your death a year after participating in the study. It also seems like the headline is somewhat deceiving given that the study does not differentiate between mental and physical health. I don't assign the same weight to missing work because you are sick or injured to missing work because you feel depressed that day(I have admittedly had plenty of the latter at my old job).