Fig. 2.

Associations of personal and community-level exposure to air pollutants with daily oxygen saturation
Legend: Linear mixed-model analysis showing percentage point difference in oxygen saturation per interquartile range (IQR) difference in previous-day pollutant exposure. All models are adjusted for previous-day temperature, humidity, season, age, sex, race, height, weight, total pack-year smoking history, and education. Abbreviations: PM2.5, fine particulate matter less than 2.5 μm in diameter; NO2, nitrogen dioxide; O3, ozone; SpO2, blood oxygen saturation.