Mortality effects of a copper smelter strike and reduced ambient sulfate particulate matter air pollution
2007
Impact of Smelter Strike on Mortality
publication
Evidence: moderate
Author Information
Author(s): Pope CA III, Rodermund DL, Gee MM
Hypothesis
Did the smelter strike in the U.S. Southwest lead to reduced mortality due to decreased ambient sulfate?
Conclusion
The study suggests that mortality reduction during the smelter strike may not be solely attributed to decreased sulfate levels, as confounding factors exist.
Supporting Evidence
- The study found inconsistencies in mortality relationships across different states.
- Trace metals and carbon emissions from smelters complicate the interpretation of results.
- Data from the National Air Surveillance Network indicated variable sulfate levels during the strike.
Takeaway
When the smelters stopped working, fewer people seemed to die, but there are many reasons why this might not be true.
Potential Biases
Potential biases due to confounding factors like trace metals and carbon emissions were not fully explored.
Limitations
The study did not account for distance from smelters or other confounding factors affecting mortality.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website