Table 1.
Characteristics From Baseline Examination
| Variable | Total (n = 4227) | Men (n = 1961) | Women (n = 2266) |
|---|---|---|---|
| Mean age (SD), y | 61.5 (7.1) | 61.5 (7.2) | 61.5 (7.1) |
| Ethnicity, n (%) | |||
| White | 1771 (41.9) | 844 (43.0) | 927 (40.9) |
| Chinese | 494 (11.7) | 241 (12.3) | 253 (11.2) |
| African American | 1110 (26.3) | 476 (24.3) | 634 (28.0) |
| Hispanic | 852 (20.2) | 400 (20.4) | 452 (19.9) |
| Mean total cholesterol level (SD)* | |||
| mmol/L | 5.08 (0.91) | 4.90 (0.88) | 5.24 (0.91) |
| mg/dL | 197 (35) | 190 (34) | 203 (35) |
| Mean HDL cholesterol level (SD)* | |||
| mmol/L | 1.34 (0.39) | 1.17 (0.30) | 1.49 (0.41) |
| mg/dL | 52 (15) | 45 (12) | 57 (16) |
| Mean systolic BP (SD), mm Hg | 126 (21) | 125 (19) | 126 (22) |
| Smoking history, n (%)* | |||
| Never | 2045 (48.4) | 768 (39.2) | 1277 (56.3) |
| Former | 1624 (38.4) | 918 (46.8) | 706 (31.2) |
| Current | 558 (13.2) | 275 (14.0) | 283 (12.5) |
| Mean BMI (SD), kg/m2* | 28.2 (5.3) | 27.8 (4.3) | 28.5 (6.0) |
| Median hs-CRP level (IQR), nmol/L* | 18.6 (8.2–40.9) | 13.0 (6.6–28.6) | 25.8 (11.0–54.9) |
| Parental history of heart attack, n (%)* | |||
| No | 2680 (63.4) | 1299 (66.2) | 1381 (60.9) |
| Yes | 1547 (36.6) | 662 (33.8) | 885 (39.1) |
| Mean calculated HbA1c level (proportion of total hemoglobin level) (SD) | 4.8 (0.4) | 4.7 (0.4) | 4.8 (0.4) |
BMI = body mass index; BP = blood pressure; HbA1c = hemoglobin A1c; HDL = high-density lipoprotein; hs-CRP = high-sensitivity C-reactive protein; IQR = interquartile range.
*
2-tailed t test for the difference between the means of men and women was significant at P < 0.01. The chi-square test was used for categorical variables.