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Table 2 Mortality hazard ratiosa (95% CI) associated with a 10 μg/m3 increase in 12- to 60-month moving average PM2.5b, US 2005—2008

From: Long-term PM2.5 exposure and sepsis mortality in a US medicare cohort

Exposure Window

Hazard Ratio (95% CI)

12-month

1.071 (1.016–1.130)

24-month

1.124 (1.054–1.198)

36-month

1.196 (1.116–1.283)

48-month

1.204 (1.116–1.300)

60-month

1.210 (1.114–1.315)

  1. Abbreviations: CI Confidence interval, PM2.5 Particles with aerodynamic diameters < 2.5 μm
  2. aEstimated using Cox PH models with strata for age (1 year age categories with 90 + year old as one category), sex (male, female), race (white, non-white) and ZIP Code (38,715 ZIP codes), adjusted for ZIP code and state SES
  3. bSubset of ZIP codes with complete data of 12- to 60- month moving average
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BMC Public Health

ISSN: 1471-2458

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