Table 1.
Baseline characteristics of the ARIC participants (n=13,143) stratified by quartiles of traffic density and distance to major roads (>=150m, and <150m) 1987-1989 *
| Quartiles of traffic density |
Distance to major roads |
|||||
|---|---|---|---|---|---|---|
| 1 (lowest) | 2 | 3 | 4 | >=150m | <150m | |
| Age (yrs) | 53.9 (5.7) | 53.9 (5.8) | 54.1 (5.7) | 54.6 (5.8) | 53.9 (5.8) | 54.5 (5.7) |
| Female sex (%) | 54.8 | 53.8 | 55.6 | 56.5 | 54.2 | 56.8 |
| BMI (kg/m2) | 27.6 (5.3) | 27.6 (5.3) | 27.5 (5.1) | 27.8 (5.5) | 27.5 (5.2) | 27.8 (5.4) |
| Black race (%) | 30.6 | 25.6 | 25.0 | 25.7 | 26.2 | 27.5 |
| Diabetes (%) | 11.8 | 11.0 | 12.5 | 11.7 | 11.3 | 12.6 |
| Smoking status (%) † | ||||||
| Current smoker | 23.7 | 26.5 | 25.8 | 28.0 | 24.8 | 28.0 |
| Former smoker | 30.6 | 32.0 | 34.0 | 31.8 | 32.6 | 31.3 |
| Never smoker | 45.7 | 41.5 | 40.3 | 40.2 | 42.7 | 40.8 |
| Factor VIII (%) | 133 (40) | 131 (40) | 130 (39) | 132 (40) | 131 (40) | 133 (40) |
| aPTT (s) | 29 (3) | 29 (3) | 29 (3) | 29 (3) | 29 (3) | 29 (3) |
*
All values are mean (SD) unless specified as percentage.
†
Percentages add to less than 100 due to rounding.