Table 1.
Baseline Characteristics among Black and White Men and Women in the Pooled Cohort Derivation and the External Validation Samples from 7 Population-Based Cohorts
| Black | White | |||
|---|---|---|---|---|
| PC | JHS | PC | PREVEND | |
| Derivation | Validation | Derivation | Validation | |
| N=2561 | N=2770 | N=9210 | N=6699 | |
| Mean age, years (SD) | 49.3 (12.8) | 49.9 (11.6) | 53.6 (11.6) | 49.3 (12.2) |
| Female, n (%) | 1628 (64) | 1704 (62) | 5213 (57) | 3493 (52) |
| Diabetes, n (%) | 290 (11) | 302 (11) | 522 (6) | 232 (4) |
| Mean fasting glucose, mg/dL (SD) | 102 (35) | 97 (31) | 99 (25) | 88 (21) |
| Diabetes treatment, n (%) | 176 (7) | 225 (9) | 193 (2) | 99 (2) |
| Current smoking, n (%) | 656 (26) | 349 (13) | 1873 (20) | 2552 (38) |
| Mean systolic blood pressure, mm Hg (SD) | 124 (20) | 125 (16) | 120 (18) | 129 (20) |
| Hypertension treatment, n (%) | 935 (37) | 1057 (41) | 2200 (24) | 933 (14) |
| Mean total cholesterol, mg/dL (SD) | 197 (44) | 197 (39) | 208 (41) | 220 (44) |
| Mean HDL cholesterol, mg/dL (SD) | 54 (15) | 51 (14) | 52 (16) | 52 (16) |
| Mean BMI, kg/m2 | 29.8 (6.3) | 31.9 (7.4) | 26.7 (4.7) | 26.1 (4.2) |
| Mean QRS duration, msec (SD) | 89 (13) | 93 (13) | 88 (13) | 98 (13) |
PC indicates pooled cohort, which includes ARIC, CARDIA, CHS, FOF, and MESA; JHS indicates Jackson Heart Study; PREVEND indicates Prevention of REnal and Vascular ENd-stage Disease cohort