quantile model


Less is more. Stay pure. Stay poor.
I am guessing income can be a pretty ugly distribution and they are trying to address this. Think about the 1%'ers. It would be nice if they provided a histogram of income, so we could understand what the raw data looked like. I would imagine it is an acceptable application, but I would recommend that you look at comparable studies and see what is common practice in the field. Lastly, it is interesting that there is not a trend across quintiles, just all others are higher risk than referent group.
How about explaing what is the dependent variable and explanatory variables and not putting the burden on those who might help you, or not help you?