Table 1.
Baseline characteristics of 732 participants from the MOBILIZE Boston Study according to residential distance to a major roadway.
| Characteristic | All (n = 732)a | < 100 m (n = 74) | 100–250 m (n = 78) | 250–500 m (n = 130) | 500–1,000 m (n = 213) | > 1,000 m (n = 228) |
|---|---|---|---|---|---|---|
| Age (years; mean ± SD) | 78.1 ± 5.5 | 78.5 ± 5.0 | 77.5 ± 4.8 | 78.3 ± 5.5 | 78.3 ± 5.7 | 77.8 ± 5.6 |
| Male (%) | 35.8 | 37.8 | 26.9 | 35.4 | 36.6 | 38.2 |
| Non-Hispanic white (%) | 77.7 | 78.4 | 74.4 | 79.2 | 76.5 | 78.9 |
| Education (%) | ||||||
| High school or less | 33.9 | 28.4 | 26.9 | 41.5 | 32.9 | 34.6 |
| College or vocational school | 34.8 | 45.9 | 38.5 | 34.6 | 30.5 | 33.8 |
| Graduate school | 31.1 | 24.3 | 34.6 | 23.8 | 36.6 | 31.6 |
| Household income ≤ $35,000 (%) | 55.1 | 60.8 | 60.3 | 60.8 | 50.7 | 51.8 |
| BMI (kg/m3; mean ± SD) | 27.3 ± 5.1 | 27.5 ± 4.5 | 27.7 ± 5.0 | 26.9 ± 4.6 | 27.1 ± 5.4 | 27.6 ± 5.3 |
| Alcohol consumption (drinks/day; mean ± SD) | 0.9 ± 1.0 | 0.7 ± 0.8 | 1.0 ± 0.7 | 0.9 ± 0.9 | 1.0 ± 1.2 | 1.0 ± 0.9 |
| Ever smoker (%) | ||||||
| Never | 42.9 | 36.5 | 42.3 | 41.5 | 44.1 | 45.6 |
| Past | 52.2 | 54.1 | 60.3 | 53.8 | 52.6 | 49.1 |
| Current | 4.8 | 9.4 | 5.1 | 4.6 | 2.8 | 5.3 |
| Hypertension (%) | 78.0 | 75.7 | 73.1 | 85.4 | 75.6 | 78.9 |
| Diabetes mellitus (%) | 20.1 | 25.7 | 5.1 | 24.6 | 21.6 | 18.9 |
| Hyperlipidemia (%) | 47.1 | 54.1 | 42.3 | 40.8 | 50.2 | 46.5 |
| MMSE (mean ± SD) | 27.2 ± 2.6 | 27.0 ± 2.6 | 26.9 ± 2.7 | 27.0 ± 2.6 | 27.2 ± 2.7 | 27.3 ± 2.5 |
| CESD-R ≥ 16 (%) | 8.5 | 6.8 | 11.5 | 14.6 | 7.0 | 6.1 |
| Antidepressant use (%) | 12.4 | 13.5 | 24.4 | 13.1 | 9.4 | 10.5 |
| CESD-R assessed at both visits (%) | 79.5 | 78.4 | 79.5 | 76.9 | 79.3 | 81.6 |
| aPercent of missing data: BMI (2.5%), hypertension (1.1%), alcohol consumption (0.1%), education (0.1%), smoking (0.1%), antidepressant use (2.7%) | ||||||