Fig. 2
Percent increases of outpatient visits associated with 1-mg/m3 increase in CO in multi-pollutant models. Abbreviation: RED respiratory diseases, CVD cardiovascular diseases, GUD genitourinary diseases, GID gastrointestinal diseases, NPD neuropsychiatric diseases. Note: All the models were constructed for pollutant at lag06. Model1: Single-pollutant model for CO at lag06; model2: six-pollutants model including PM2.5, PM10, NO2, SO2, O3 and CO; model3: two-pollutant model adjusted for PM2.5; model4: two-pollutant model adjusted for PM10; two-pollutant model adjusted for NO2; two-pollutant model adjusted for SO2; two-pollutant model adjusted for O3. The points indicate central estimates; Bars, 95% confidence intervals