Table 4.
Mortality RRs (95% CI) associated with a 10 ppb increase in different O3 exposure measures
| Cause of death | 1-h Maxa O3 | 8-h Maxa O3 | 24-h Averagea O3 |
|---|---|---|---|
| All-cause | 1.004 (1.003–1.006) | 1.002 (1.001–1.003) | 0.990 (0.988–0.991) |
| Accidental | 1.010 (1.002–1.017) | 1.018 (1.009–1.027) | 1.025 (1.014–1.036) |
| All cardiovascular | 1.005 (1.003–1.007) | 0.997 (0.995–0.999) | 0.973 (0.970–0.975) |
| Ischemic heart disease | 1.008 (1.006–1.011) | 0.996 (0.993–0.999) | 0.964 (0.960–0.967) |
| Cerebrovascular disease | 0.993 (0.989–0.997) | 0.987 (0.982–0.991) | 0.968 (0.962–0.974) |
| Congestive heart failure | 1.063 (1.055–1.071) | 1.072 (1.063–1.080) | 1.066 (1.056–1.077) |
| All respiratory | 1.030 (1.027–1.034) | 1.033 (1.030–1.037) | 1.021 (1.016–1.026) |
| COPD | 1.072 (1.067–1.077) | 1.084 (1.079–1.089) | 1.084 (1.077–1.091) |
| Pneumonia | 0.990 (0.984–0.996) | 0.978 (0.972–0.985) | 0.935 (0.927–0.944) |
| All cancer | 0.995 (0.993–0.998) | 0.993 (0.990–0.995) | 0.983 (0.980–0.986) |
| Lung cancer | 1.015 (1.010–1.020) | 1.016 (1.011–1.021) | 1.007 (1.000–1.014) |
Time period: 2000 – 2008, USA
RR risk ratio, CI confidence interval, IHD ischemic heart disease, CBV cerebrovascular disease, CHF congestive heart failure, COPD chronic obstructive pulmonary disease
Risk ratios are age, gender and race stratified, and adjusted for state of residence and 1-year moving average PM2.5 exposures
aWarm-season average of daily ozone concentrations