Fig. 3: Delayed impact of PM2.5 exposure on aSAH risk. | npj Clean Air

Fig. 3: Delayed impact of PM2.5 exposure on aSAH risk.

From: Effects of airborne particulate exposure on aneurysmal subarachnoid hemorrhage risk: brief communication

Fig. 3

Multivariable Poisson regression analysis demonstrating daily incident risk ratios (IRRs) for 90-day intervals before aneurysmal subarachnoid hemorrhage (aSAH). Error bars represent 95% confidence intervals. Statistical significance is denoted as * (p < 0.05). Mean particulate matter 2.5 (PM2.5) levels demonstrate a 3- to 6-month delayed positive association with aSAH incidence (red line). Mean PM2.5 levels within 3 months before aSAH were inversely associated with daily SAH incidence (blue line), possibly because of cyclic PM2.5 levels and the delayed effects of PM2.5 exposure. There was no association at 6–9 months (green line).

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