Table 2.
Descriptive statistics for ambient pollutant concentrations across all person-years.
| Pollutant | Mean (SD) | Median | IQR | Percentile | |
|---|---|---|---|---|---|
| 1st | 99th | ||||
| PM2.5 (µg/m3) | 9.5 (1.3) | 9.5 | 1.6 | 7.0 | 13.0 |
| OPAA (% depletion/µg) | 0.092 (0.036) | 0.085 | 0.034 | 0.016 | 1.036 |
| OPGSH (% depletion/µg) | 0.337 (0.070) | 0.332 | 0.068 | 0.182 | 1.442 |
| ROS (nmol/L) | 71.474 (10.807) | 73.399 | 14.311 | 44.525 | 95.110 |
| NO2 (ppb) | 20.027 (5.475) | 19.80 | 7.60 | 8.64 | 35.00 |
| O3 (ppb) | 38.697 (5.081) | 37.75 | 6.73 | 29.41 | 51.88 |
| Ox (ppb) | 32.345 (3.804) | 31.88 | 5.01 | 25.56 | 42.66 |
IQR indicates interquartile range; SD, standard deviation.