Long-term exposure to low-concentration PM_2.5 and heart disease in older men in Perth, Australia: The Health in Men Study.

When considering the event of incident principal or additional diagnosis of AF, unadjusted risk was elevated at concentrations of PM 2.5 greater than about 5 μg/m 3 (Table 2 and Figure 3 D); however, this did not reach statistical significance (7 vs. 1 μg/m 3 ; HR = 1.08; 95% CI = 0.95, 1.23).

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While there was a slight trend toward increased risk of AF at the higher end of PM 2.5 distribution, this study did not find a statistically significantly increased risk of incident AF with higher concentrations of PM 2.5 .

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