Table 2.
Single and multipollutant random effects logistic regression models: association of particulate matter, black carbon, and nitrogen dioxide with odds of reporting uncontrolled asthma
| Air Pollutants | Single-Pollutant Unadjusted OR (95% CI) | Multipollutant Adjusted OR (95% CI)* |
|---|---|---|
| PM2.5 | 1.27 (1.12–1.45) | 1.59 (1.26–2.00) |
| Total BC | 1.31 (0.97–1.78) | — |
| Proportion BC | — | 4.89 (1.64–14.62) |
| NO2 | 1.86 (1.53–2.25) | 1.34 (1.05–1.71) |
Definition of abbreviations: BC = black carbon; CI = confidence interval; NO2 = nitrogen dioxide; OR = odds ratio; PM2.5 = particulate matter <2.5 μg in aerodynamic diameter.
*
Adjusted models include the following covariates: age (continuous), sex (male vs. female), socioeconomic status score, body mass index (normal, overweight, obese), baseline forced expiratory volume z-score, site (Pampas, Villa), temperature (°C), and each pollutant. Proportion BC indicates the proportion of PM2.5 that was BC.