Total non-accidental mortality analysis In the Cox regression analysis, aHRs for each 10-μg/m 3 increment in PM 10 after a 12-month average exposure was 1.011(95% CI, 0.994–1.027) in total COPD patients, which was borderline significant statistically.
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Effects of PM<sub>10</sub> on mortality in pure COPD and asthma-COPD overlap: difference in exposure duration, gender, and smoking status.
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