TABLE 3.
ODDS RATIO OF HEAVY DUST EVENTS FOR ASTHMA HOSPITALIZATION ADJUSTED BY OTHER POLLUTANTS IN TWO-POLLUTANT MODEL
| Two-pollutant Model Adjusted by |
||||||
|---|---|---|---|---|---|---|
| Single-Pollutant Model | Non–M Dust | Pollen | NO2 | SO2 | Ox | |
| Crude OR | 1.83 | 1.79 | 2.04 | 1.70 | 1.80 | 1.63 |
| 95% CI | 1.31–2.56 | 1.28–2.51 | 1.44–2.88 | 1.21–2.39 | 1.28–2.55 | 1.15–2.29 |
| Climatically adjusted OR | 1.86 | 1.83 | 2.19 | 1.76 | 1.86 | 1.66 |
| 95% CI | 1.32–2.62 | 1.30–2.58 | 1.50–3.04 | 1.25–2.48 | 1.31–2.64 | 1.17–2.35 |
Definition of abbreviations: CI = confidence interval; Non–M dust = non–mineral dust particles; OR = odds ratio.
Non–mineral dust (on the day: lag 0 d) and pollen (on the previous day: lag 1 d) was treated as a five-level variable, NO2 was treated as dichotomous (with cut-off value of 80th percentile and cumulative lag 0–5 d), and SO2 (on the day: lag 0 d) was treated as a five-level nominal variable.