Table 4.
Logistic random effects regression evaluating the association of multiple pollutants with the odds of reporting health care utilization and missed school days
| Air Pollutants | Single-Pollutant Unadjusted OR (95% CI) | Multipollutant Adjusted OR (95% CI)* |
|---|---|---|
| Health care utilization | ||
| PM2.5 | 1.00 (0.84–1.21) | 1.44 (1.08–1.92) |
| BC | 1.17 (0.80–1.71) | — |
| Proportion BC | — | 4.06 (1.38–11.95) |
| NO2 | 1.21 (0.98–1.49) | 0.95 (0.74–1.21) |
| Missed school days | ||
| PM2.5 | 1.16 (0.94–1.42) | 1.32 (0.96–1.82) |
| BC | 1.59 (1.01–2.50) | — |
| Proportion BC | — | 3.12 (0.91–10.66) |
| NO2 | 1.38 (1.08–1.75) | 1.21 (0.91–1.60) |
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.