Table 1. Characteristics of BHS Participants (n=1,177).
| Characteristic | Overall | White Male (n=324) | White Female (n=449) | Black Male (n=150) | Black Female (n=254) |
| Age(years), mean (SD) | 48.11 (5.26) | 48.92 (4.91) | 48.15 (5.08) | 47.27 (6.03) | 47.53 (5.38) |
| <=12 years (high school), n (%) | 589 (50.04%) | 156 (48.15%) | 176 (39.20%) | 105 (70.00%) | 152 (59.84%) |
| Vocabulary score, mean (SD) | 26.54 (9.83) | 28.87 (8.94) | 30.43 (9.30) | 20.23 (7.88) | 20.42 (7.91) |
| Depression, n (%) | 124 (10.54%) | 26 (8.02%) | 60 (13.36%) | 11 (7.33%) | 27 (10.63%) |
| Smoking, n (%) | |||||
| Never | 600 (50.98%) | 158 (48.77%) | 243 (54.12%) | 50 (33.33%) | 149 (58.66%) |
| Former | 348 (29.57%) | 105 (32.41%) | 133 (29.62%) | 47 (31.33%) | 63 (24.80%) |
| Current | 229 (19.46%) | 61 (18.83%) | 73 (16.26%) | 53 (35.33%) | 42 (16.54%) |
| Drinking, n (%) | |||||
| Never | 138 (11.72%) | 13 (4.01%) | 55 (12.25%) | 17 (11.33%) | 53 (20.87%) |
| Former | 379 (32.20%) | 109 (33.64%) | 145 (32.29%) | 48 (32.00%) | 77 (30.31%) |
| Current | 660 (56.07%) | 202 (62.35%) | 249 (55.46%) | 85 (56.67%) | 124 (48.82%) |
| BMI (kg/m2), mean (SD) | 31.37 (7.79) | 30.46 (6.05) | 30.12 (7.40) | 31.13 (8.58) | 34.87 (8.88) |
| SBP (mmHg), mean (SD) | 123.08 (16.72) | 125.35 (13.69) | 117.28 (14.45) | 131.50 (15.86) | 125.46 (20.68) |
| Glucose(mg/dl), mean (SD) | 106.07 (34.64) | 106.90 (26.73) | 103.88 (35.65) | 107.55 (31.81) | 108.03 (42.47) |
| LDL cholesterol(mg/dl), mean (SD) | 114.61 (35.06) | 116.97 (33.74) | 116.04 (33.91) | 108.02 (35.82) | 112.95 (37.81) |
| Global cognition, median (IQR) | 0.52 (7.68) | 0.71 (6.91) | 2.98 (6.80) | -3.80 (6.39) | -1.36 (7.32) |
| Verbal Memory | |||||
| Logical memory I, median (IQR) | 20.00 (10.00) | 20.00 (9.00) | 22.00 (9.00) | 17.00 (10.00) | 18.00 (8.00) |
| Logical memory II, median (IQR) | 16.00 (10.00) | 16.00 (10.00) | 18.00 (9.00) | 12.00 (8.00) | 14.00 (8.00) |
| Logical memory II-recognition, median (IQR) | 24.00 (4.00) | 24.00 (4.00) | 25.00 (4.00) | 22.00 (5.00) | 23.00 (4.00) |
| Attention and Concentration | |||||
| Digit span forward, median (IQR) | 11.00 (4.00) | 12.00 (4.00) | 12.00 (4.00) | 10.50 (4.00) | 11.00 (4.00) |
| Digit span backward, median (IQR) | 7.00(3.00) | 8.00 (4.00) | 8.00 (4.00) | 6.00 (3.00) | 7.00 (2.00) |
| Processing Speed | |||||
| Digit coding, median (IQR) | 60.00 (24.00) | 57.00 (20.00) | 67.00 (23.00) | 45.00 (20.00) | 59.00 (25.00) |
| Trial making test A, median (IQR) | 0.42 (0.21) | 0.43 (0.20) | 0.39 (0.18) | 0.48 (0.25) | 0.44 (0.21) |
| Ability to Decode | |||||
| Word reading, median (IQR) | 42.00 (13.00) | 45.00 (10.00) | 46.00 (9.00) | 36.00 (16.00) | 37.00 (13.00) |
| Executive function | |||||
| Trial making test B, median (IQR) | 0.91 (0.53) | 0.89 (0.48) | 0.83 (0.44) | 1.16 (0.67) | 1.01 (0.57) |
Data are presented as mean (standard deviation) or median (interquartile range) for continuous variables and as percentage for categorical variables.
BMI: body mass index
SBP: systolic blood pressure
LDL: low-density lipoprotein
SD: standard deviation
IQR: interquartile range