List three types of air pollution and the main sources of each type Custom Paper

Q1. List three types of air pollution and the main sources of each type.

Q2. List three different study designs that can be used to investigate the effects of air pollution on human health

Q3. Why is the study described in this paper called a “semi-ecological study”?

Q4. As this is a cohort study, what are the exposure variable(s)?

Q5. What are the outcome variable(s)?

Q6. The investigators adjusted for potential confounding factors, what were these?
Q7. Summarise the main findings of this study

Q8. Does the study provide evidence of a causal link between air pollution and mortality? If so what is this evidence?

Q9. What are the limitations of this study?

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