Are questions about medical research protocol on-topic?
I saw this question on another Stack Exchange site, and wondered, how do they even know that one person in China died from "air pollution"?
How do these "studies" that lump millions of people in to categories know how to classify the deaths? Do they categorically assume that everyone with asthma that died was "killed by air pollution"? if so, wouldn't all such statistics be overstated from the start?