Krieger: A little bit besides the point, but I'm surprised that the authors could find the addresses of so many crimes committed. Obviously it becomes easier to locate if the crime is high profile, is featured on the news, etc., but is it common for identifiable characteristics to become public knowledge after crimes?
The results of this study are pretty hard to discern but from what I can gather, the gist is that when more racial and socioeconomic factors are considered, the differences between groups in terms of violence is more apparent. This is sadly unsurprising, and equally disappointing because as an academic community we can be aware of problems for so long before institutional changes are made.
Jones: It's interesting to me that despite having the second highest percentage of people with incomes <=25000, Chinese participants had lower PM2.5 and NOx exposures than Whites in Chicago. I also found it surprising that only neighborhoods with >60% Hispanic population saw significantly higher PM and NOx than other neighborhoods, and it looks like Blacks actually had less PM exposure than whites in all but Winston-Salem of the cities studied.