Exposure Change of blood pressure (mmHg)
Air pollution IQR SBP DBP
PM10, μg/m3 21.2 2.0 (0.7, 41.7) 2.0 (1.2, 41.7)
PM2.5, μg/m3 9.5 1.4 (0.3, 18.9) 1.4 (0.8, 18.9)
PM10-2.5, μg/m3 13.6 2.5 (0.8, 26.9) 2.3 (1.3, 26.9)
NO2, ppb 9.0 1.6 (0.4, 17.8) 1.7 (0.9, 17.8)
O3, ppb 16.4 -0.6 (-2.9, 32.1) 1.0 (-0.4, 32.2)
SO2, ppb 1.7 2.5 (1.1, 4.8) 1.3 (0.4, 4.1)
CO, 10 ppm 1.6 1.4 (0.1, 4.0) 1.2 (0.5, 3.9)
Abbreviations: PM10: Particulate Matter of<10 μm in diameter; PM2.5: Particulate Matter of<2.5 μm in diameter; IQR: Interquartile Range; NO2: Nitrogen Dioxide; SO2: Sulfur Dioxide; O3: Ozone; CO: Carbon Monoxide; SBP: Systolic Blood Pressure; DBP: Diastolic Blood Pressure
Models were adjusted for age; sex; exercise level; regular alcohol consumption; body mass index; history of hypertension; smoking status, based on cotinine level; education; follow-up time; daily mean temperature; relative humidity; sea-level pressure; and season.
Table 3: Blood pressure changes associated with Interquartile Range (IQR) increases of air pollution concentrations.