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Table 4 Emergency department visits for each interquartile range change in the two-pollutant models

From: Ambient air pollution is associated with pediatric pneumonia: a time-stratified case–crossover study in an urban area

OR (95% CI) of pneumonia
Adjusted for temperature, humidity, and pollutant
Single-pollutant model Adjusted PM2.5 Adjusted PM2.5–10 Adjusted NO2 Adjusted SO2
PM2.5 1.140 (1.051–1.238)   1.156 (1.055–1.267) 1.089 (0.986–1.202) 1.119 (1.027–1.219)
NO2 1.141 (1.050–1.241) 1.088 (0.984–1.203) 1.136 (1.040–1.240)   1.115 (1.015–1.226)
SO2 1.045 (1.008–1.084) 1.030 (0.991–1.070) 1.042 (1.004–1.082) 1.022 (0.981–1.066)  
  1. PM2.5–10: Particulate matter with an aerodynamic diameter between 2.5 and 10 μm.