Skip to main content

Table 2 Spatio-temporal distribution of cardiovascular ED visits and air pollutants

From: Ambient air quality and spatio-temporal patterns of cardiovascular emergency department visits

  Mean ± SD Min. 1st Q. Median 3rd Q. Max.
ED visits
Daily counts per zip 0.09 ± 0.31 0.00 0.00 0.00 0.00 3.00
Total counts per zip 31.69 ± 32.39 0.00 7.75 22.50 45.75 153.00
Total counts per day 7.29 ± 2.75 0.00 5.00 7.00 9.00 16.00
Air pollutants
NO\(_2\) (ppmv) 6.26 ± 4.31 0.38 2.87 5.15 8.59 24.29
PM2.5 (\(\upmu \hbox {g}/\hbox {m}^3\)) 9.48 ± 4.76 1.13 5.88 8.60 12.00 29.22
Ozone (ppb) 39.63 ± 10.81 13.77 31.87 38.65 45.44 87.21