Table 3.
Percent Change in Hospital Admission Rates for ARDS According to 1 µg/m3 Increase in Annual Average PM2.5 Concentrations or 1 ppb Increase in Annual Average Ozone Concentrations (95% CI)
| Pollutant | ARDS |
|
|---|---|---|
| Two-Pollutant | Single-Pollutant | |
| PM2.5 | 0.72 (0.62 to 0.82) | 0.76 (0.66 to 0.86) |
| Ozone | 0.15 (0.08 to 0.22) | 0.24 (0.18 to 0.31) |
| Subgroup analysis | ||
| ARDS with sepsis | ||
| PM2.5 | 1.23 (1.10 to 1.36) | 1.20 (1.07 to 1.33) |
| Ozone | –0.09 (–0.17 to 0.00) | 0.07 (–0.02 to 0.15) |
| ARDS with pneumonia | ||
| PM2.5 | 0.44 (0.08 to 0.81) | 0.69 (0.33 to 1.05) |
| Ozone | 0.89 (0.64 to 1.14) | 0.95 (0.70 to 1.19) |
| ARDS with traumatic injury | ||
| PM2.5 | –0.15 (–0.45 to 0.15) | 0.10 (–0.19 to 0.40) |
| Ozone | 0.86 (0.66 to 1.06) | 0.84 (0.64 to 1.04) |
Two-pollutant (PM2.5 and ozone) and single-pollutant models are compared. Subgroup analysis (eg, patients with ARDS and risk factors [sepsis, pneumonia, and traumatic injury]) are included. See Table 2 legend for expansion of abbreviations.