Table 5 Odds ratios (95% CI) for the association between ICD discharge and an interquartile range increase in 24 h mean air pollutant concentrations stratified by the five regions of Ontario (n = 1919). Results were adjusted for 24 h mean temperature, relative humidity and barometric pressure
Air Pollutant | Region of Ontario | ||||
|---|---|---|---|---|---|
Eastern (n = 426) | Central (n = 738) | Metropolitan Toronto (n = 349) | Southwestern (n = 298) | Northern (n = 108) | |
SO2, ppb | 1.95 (0.89–4.28) | 0.94 (0.83–1.07) | 0.91 (0.70–1.20) | 0.94 (0.80–1.12) | 0.90 (0.45–1.77) |
NO2, ppb | 0.82 (0.46–1.45) | 0.80 (0.62–1.02) | 0.96 (0.70–1.30) | 1.20 (0.75–1.93) | 0.7 2 (0.14–3.74) |
Ozone, ppb | 0.85 (0.61–1.19) | 1.10 (0.87–1.39) | 1.10 (0.77–1.56) | 0.98 (0.66–1.45) | 1.04 (0.46–2.34) |
PM2.5, μg/m3 (adj) | 0.97 (0.75–1.26) | 0.94 (0.81–1.10) | 1.12 (0.92–1.36) | 0.84 (0.65–1.10) | 0.80 (0.40–1.62) |
AQHI | 0.87 (0.63–1.20) | 0.88 (0.74–1.04) | 0.93 (0.75–1.16) | 1.11 (0.83–1.49) | 0.64 (0.20–2.04) |