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Table 3 Rate of STEMI associated with each interquartile range increase in pollutant concentration (2005–2016)

From: Changes in triggering of ST-elevation myocardial infarction by particulate air pollution in Monroe County, New York over time: a case-crossover study

Lag hours Interquartile range No. of STEMI Odds ratio 95% confidence interval
PM2.5(μg/m3)
 0 7.59 858 1.03 0.95, 1.13
 0–2 7.33 848 1.05 0.96, 1.15
 0–11 6.57 855 1.02 0.93, 1.12
 0–23 6.21 854 1.01 0.91, 1.11
 0–47 5.71 848 0.98 0.89, 1.09
 0–71 5.30 833 0.96 0.87, 1.07
AMP (particles/cm3)
 0 698 779 1.07 0.97, 1.18
 0–2 688 771 1.05 0.96, 1.16
 0–11 693 780 1.03 0.91, 1.15
 0–23 670 772 1.01 0.89, 1.14
 0–47 602 763 1.01 0.88, 1.15
 0–71 543 751 0.97 0.85, 1.11
UFP (particles/cm3)
 0 3702 779 1.12 1.03, 1.22
 0–2 3506 771 1.11 1.02, 1.22
 0–11 3265 780 1.05 0.93, 1.18
 0–23 2955 772 1.00 0.88, 1.14
 0–47 2568 763 1.06 0.93, 1.22
 0–71 2349 751 1.00 0.86, 1.16
UFP 11-50 nm(particles/cm3)
 0 2755 779 1.13 1.04, 1.22
 0–2 2551 771 1.12 1.03, 1.21
 0–11 2344 780 1.03 0.92, 1.16
 0–23 2151 772 0.97 0.85, 1.12
 0–47 1862 763 1.04 0.90, 1.21
 0–71 1682 751 0.98 0.84, 1.15
UFP 50-100 nm(particles/cm3)
 0 1161 779 1.06 0.97, 1.14
 0–2 1108 771 1.06 0.97, 1.15
 0–11 1118 780 1.07 0.96, 1.20
 0–23 1035 772 1.05 0.94, 1.19
 0–47 952 763 1.09 0.95, 1.25
 0–71 844 751 1.02 0.89, 1.18
Black Carbon (μg/m3)
 0 0.44 891 1.09 1.01, 1.18
 0–2 0.43 885 1.09 1.00, 1.18
 0–11 0.42 891 1.05 0.95, 1.16
 0–23 0.39 893 1.05 0.94, 1.16
 0–47 0.35 884 1.10 0.98, 1.23
 0–71 0.33 881 1.03 0.91, 1.17
SO2(ppb)
 0 1.77 889 1.04 0.99, 1.09
 0–2 2.20 884 1.09 1.02, 1.18
 0–11 2.27 889 1.17 1.06, 1.29
 0–23 2.30 896 1.15 1.01, 1.30
 0–47 2.19 886 1.14 0.98, 1.33
 0–71 2.22 883 1.18 0.99, 1.41
O3 (ppb)
 0 18.0 884 0.89 0.77, 1.03
 0–2 17.3 872 0.90 0.78, 1.04
 0–11 15.2 888 0.92 0.80, 1.06
 0–23 13.7 893 0.92 0.79, 1.07
 0–47 12.9 887 0.87 0.73, 1.03
 0–71 12.3 883 0.90 0.75, 1.07
CO (ppm)
 0 0.23 866 1.15 1.02, 1.29
 0–2 0.23 852 1.13 1.00, 1.28
 0–11 0.21 873 1.10 0.96, 1.27
 0–23 0.22 875 1.07 0.91, 1.25
 0–47 0.21 870 1.10 0.94, 1.30
 0–71 0.21 864 1.08 0.91, 1.29
  1. Odds ratios were estimated from conditional logistic regression models adjusting for mean temperature and relative humidity during the same lag hour(s)
  2. STEMI ST-elevation myocardial infarction