Table 1 Baseline characteristics of the cohort (n = 628)
| Â | Â | HFE C282Y | HFE H63D | ||
|---|---|---|---|---|---|
|  | All (n = 628) | Wild type (n = 540) | Variant (n = 88) | Wild type (n = 469) | Variant (n = 159) |
Variable, mean ± SD | |||||
   Age, years | 70.0 ± 7.1 | 70.1 ± 7.1 | 69.5 ± 7.1 | 70.0 ± 7.3 | 70.2 ± 6.3 |
   Education, years | 14.4 ± 2.6 | 14.4 ± 2.7 | 14.4 ± 2.4 | 14.5 ± 2.7 | 14.3 ± 2.5 |
   Black carbon concentration, μg/m3 | 0.58 ± 0.28 | 0.58 ± 0.28 | 0.57 ± 0.27 | 0.59 ± 0.29 | 0.56 ± 0.24 |
   Body mass index, kg/m2 | 27.9 ± 3.9 | 27.9 ± 4.0 | 28.0 ± 3.7 | 28.0 ± 4.1 | 27.6 ± 3.5 |
   Physical activity, MET-hr/week | 16.6 ± 20.1 | 16.3 ± 19.9 | 18.0 ± 21.8 | 16.7 ± 20.6 | 16.3 ± 18.8 |
   % of census tract: adults with a college degree | 39.9 ± 16.5 | 40.3 ± 16.8 | 37.1 ± 14.5 | 40.2 ± 16.5 | 39.1 ± 16.8 |
   % of census tract: non-white | 10.9 ± 11.4 | 10.9 ± 11.1 | 10.4 ± 13.0 | 10.4 ± 10.6 | 12.3 ± 13.4 |
Variable, n (%) | |||||
   Diabetic | 94 (15.0) | 79 (14.6) | 15 (17.0) | 69 (14.7) | 25 (15.7) |
   Hypertensive | 415 (66.1) | 367 (68.0) | 48 (54.5) | 304 (64.8) | 111 (69.8) |
   Smoking |  |  |  |  |  |
    Never | 185 (29.5) | 161 (29.8) | 24 (27.3) | 140 (29.9) | 45 (28.3) |
    Former | 410 (65.3) | 351 (65.0) | 59 (67.0) | 302 (64.4) | 108 (67.9) |
    Current | 33 (5.3) | 28 (5.2) | 5 (5.7) | 27 (5.8) | 6 (3.8) |
   Consume ≥2 alcoholic drinks per day | 157 (25.0) | 137 (25.4) | 20 (22.7) | 122 (26.0) | 35 (22.0) |
   Consume dark fish ≥1/week | 94 (15.0) | 81 (15.0) | 13 (14.8) | 68 (14.5) | 26 (16.4) |
   English as first language | 538 (85.7) | 454 (84.1) | 84 (95.5) | 400 (85.3) | 138 (86.8) |
   Has computer experience | 255 (40.6) | 218 (40.4) | 37 (42.0) | 193 (41.2) | 62 (39.0) |