Table 1.
Age-standardized baseline characteristics according to quintiles of O3 at 1995 address.
| Quintiles of O3 from lowest to highest levels based on the Downscaler model assigned to participants (ppb) | |||||
|---|---|---|---|---|---|
|
| |||||
| Q1 lowest | Q2 | Q3 | Q4 | Q5 highest | |
| Characteristics | 25.4–33.5 | 33.5–35.2 | 35.2–38.6 | 38.6–41.8 | 41.8–56.4 |
| Age, mean ± SD | 38.2 ± 10.8 | 39.4 ± 11.0 | 39.2 ± 10.6 | 38.4 ± 10.5 | 3830.3 ± 9.9 |
| BMI, mean ± SD | 27.8 ± 6.6 | 27.9 ± 6.7 | 27.9 ± 6.7 | 27.6 ± 6.4 | 27.2 ± 6.1 |
| BMI ≥ 30, % | 29 | 30 | 29 | 28 | 25 |
| Never drinker, % | 53 | 55 | 58 | 57 | 58 |
| Current/past smoker, % | 40 | 39 | 36 | 34 | 30 |
| Vigorous exercise ≥5 h/wk, % | 14 | 12 | 13 | 14 | 14 |
| Highest (healthiest) quintile of prudent diet score, % | 20 | 18 | 19 | 19 | 19 |
| Income ≤$25,000, % | 10 | 9 | 9 | 8 | 8 |
| Education ≤12 yrs, % | 19 | 18 | 18 | 18 | 16 |
| Lowest quintile area SES (%) | 27 | 22 | 21 | 17 | 11 |
| Parental history of diabetes, % | 25 | 25 | 26 | 26 | 26 |