METHODS: Publicly available datasets were linked with a state trauma registry by home zipcode for traumatically injured workers in Illinois from 2000 to 2009.We calculated numbers and rates of injuries, determined the spatial relationships, and developed 3 models that could predict where these cases clustered.
RESULTS: 23,200 occupational injuries clustered in 10 locations. 80% of cases were located in 20% of zip codes. After component analysis, numbers and clusters of injuries correlated directly with communities where there was a high proportion of Hispanic and foreign born residents; injury rates inversely correlated with extreme poverty and a high proportion of African American residents.
CONCLUSIONS: Traumatic occupational injuries cluster spatially by home resdiences of affected workers; clustering occurs in a predictable way. Given that severe injuries have a high rate of both short- and long-term disability, this study demonstrates that traumatic occupational injury puts an inequitable burden on communities of Hispanic and foreign born workers. It provides evidence for the potential value of conducting community based interventions for at-risk, hard-to reach worker populations. It also promotes inclusion of occupational health in health inequities research. Investigators should consider how to include "work" measures in health disparities research. Public health practitioners should look for ways to provide health and safety training in community settings to high risk populations.