Table 3. Odds ratios (ORs) and 95% CI for acute myocardial infarction admissions for each interquartile range increase, in the single-pollutant model.

Pollutant		OR (95% CI)
PM2.5		1.16 (1.03−1.29)*
PM10		1.05 (1.01−1.16)*
NO2		0.82 (0.75−1.02)
SO2		0.87 (0.63−1.95)
CO		1.08 (1.02−1.21)*

*P < 0.05. CO: carbon monoxide; NO₂: nitrogen dioxide; PM: particulate matter; SO₂: sulphur dioxide.