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Fig. 2 | Respiratory Research

Fig. 2

From: Short-term exposure to ambient air pollution and pneumonia hospital admission among patients with COPD: a time-stratified case-crossover study

Fig. 2

Exposure–response curves between air pollutant exposures and pneumonia hospital admission among COPD patients. Adjusted ORs (95% CIs) for PM2.5 (lag 2), PM10 (lag 2), SO2 (lag 03), NO2 (lag 03), CO (lag 2), and O3 (lag 04) were estimated for continuous exposures excluding those less and greater than 1% by using conditional logistic regression models, adjusting for temperature, relative humidity, and number of hospital admission. OR odds ratio, CI confidence interval, COPD chronic obstructive pulmonary disease, PM2.5 particulate matter with an aerodynamic diameter ≤ 2.5 µm, PM10 particulate matter with an aerodynamic diameter ≤ 10 µm, SO2 sulfur dioxide, NO2 nitrogen dioxide, CO carbon monoxide, O3 ozone

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