Table 1.
Percent change (95 % CI) in risk of emergency room visits for myocardial infarction associated with Lag-0 PM2.5 across strata of glutathione-related oxidative potential (OPGSH) and combined redox-weighted oxidant capacity of NO2 and O3 (Ox wt)
| Percentile of 3-day mean Ox wt | Percentile of Regional OPGSH | |||
|---|---|---|---|---|
| ≤50th | >50th | >75th | >90th | |
| ≤50th | −2.0 (−5.0, 1.0) | 0.57 (−4.0, 5.0) | 2.9 (−1.2, 7.2) | 6.0 (0.0, 13) |
| >50th | 1.5 (−0.6, 3.6) | 5.5 (3.0, 8.0) | 6.4 (2.0, 11) | 10 (7.5, 13) |
| >75th | 1.5 (−1.3, 4.4) | 5.7 (2.5, 9.1) | 6.7 (1.8, 12) | 13 (6.8, 19) |
| >90th | 1.4 (−4.6, 7.8) | 9.0 (3.5, 15) | 9.2 (0.46, 19) | 29 (26, 33) |
Risk estimates reflect a 5 μg/m3 change in PM2.5. All models are adjusted for 3-day mean ambient temperature and relative humidity (cubic splines)