Table 1.
Basic characteristics of the study participants (Men aged 40-49 years, 2000-2006)
| Japanese (n = 310) | Japanese-American (n = 293) | US white (n = 297) | P value‡ | |
|---|---|---|---|---|
| Age (yrs) | 45.1 (2.8) | 46.1 (2.8) | 45.0 (2.8) | <0.001 |
| Body mass index (kg/m2) | 23.7 (3.1) | 28.0 (4.6) | 27.9 (4.3) | <0.001 |
| Systolic blood pressure (mm Hg) | 125.0 (16.1) | 127.6 (12.6) | 122.5 (11.2) | <0.001 |
| LDL-C (mg/dL) | 132.3 (36.0) | 121.9 (32.8) | 134.6 (33.6) | <0.001 |
| Triglycerides (mg/dL)* | 139.2 (103.3, 182.8) | 150.6 (93.0, 227.0) | 132.0 (92.5, 186.5) | <0.001 |
| HDL-C (mg/dL) | 54.1 (13.6) | 50.7 (12.3) | 47.8 (12.7) | <0.001 |
| Fasting glucose (mg/dL) | 106.9 (18.7) | 112.4 (21.1) | 101.8 (15.4) | <0.001 |
| C-reactive protein (mg/L)* | 0.38 (0.15, 0.67) | 0.66 (0.33, 1.29) | 0.96 (0.51, 1.80) | <0.001 |
| Fibrinogen (mg/dL) | 255.0 (63.6) | 313.0 (65.8) | 291.5 (70.1) | <0.001 |
| Current cigarette smoker (%) | 49.0 | 13.0 | 7.5 | <0.001 |
| Alcohol drinker (%)† | 67.0 | 37.1 | 44.9 | <0.001 |
| Hypertension medications (%) | 5.4 | 20.4 | 8.5 | <0.001 |
| Lipid-lowering medications (%) | 3.5 | 23.1 | 12.5 | <0.001 |
| Diabetes medications (%) | 1.9 | 6.7 | 1.0 | <0.001 |
| CCS ≥ 10 (%) | 11.6 | 32.1 | 26.3 | <0.001 |
| Mean carotid IMT (mm) | 0.61 (0.07) | 0.73 (0.12) | 0.68 (0.10) | <0.001 |
Values are expressed as arithmetic mean (SD) unless otherwise stated.
*
The values of triglyceride and C-reactive protein are expressed as interquartile range.
†
Alcohol drinker was defined as those who drank alcohol 2 days/week or more.
‡
P values were calculated by analysis of variance for continuous variables or χ2-test for proportions.
LDL-C, low-density lipoprotein cholesterol ; HDL-C, high-density lipoprotein cholesterol ; CCS, coronary calcium score; IMT, intima-media cthickness.