Table 1.
Basic characteristics of the study participants in 2002–2006 (N=542)
| Mean (standard deviation) or Median (25th – 75th percentile) |
|||||
|---|---|---|---|---|---|
| White (n=260) | Japanese (n=282) | P | |||
| Age (years) | 44.9 (2.8) | 45.1 (2.8) | .343 | ||
| BMI (kg/m2) | 27.5 (3.9) | 23.5 (3.0) | <.001 | ||
| <25 | 75 (28.9) | 206 (73.1) | |||
| 25–<30 | 122 (46.9) | 68 (24.1) | |||
| ≥30 | 63 (24.2) | 8 (2.8) | |||
| VAT (cm2) | 99.6 (42.2) | 78.3 (30.8) | <.001 | ||
| SAT (cm2) | 145.8 (62.9) | 79.3 (34.5) | <.001 | ||
| WC (cm) | 97.5 (10.8) | 84.7 (8.0) | <.001 | ||
| SAD(cm) | 20.3 (2.7) | 18.7 (1.8) | <.001 | ||
| Systolic BP (mmHg) | 122.6 (11.4) | 124. 5 (15.7) | .107 | ||
| Diastolic BP (mmHg) | 73.1 (8.9) | 76.2 (11.7) | <.001 | ||
| Hypertension (n (%)) | 33 (12.7). | 68 (24.1) | .001 | ||
| Hypertension medication (n (%)) | 15 (5.8) | 12 (4.3) | .418 | ||
| Pack years of smoking (years) | .3.5 (8.3) | 19.8 (16.7) | <.001 | ||
| Alcohol consumption (g/d) | 10.3 (12.3) | 26.2 (27.6) | <.001 | ||
| Lipids | |||||
| Total cholesterol (mg/dL) | 215.4 (37.1) | 216.0 (34.8) | .844 | ||
| Triglycerides (mg/dL) | 148.9 (102.6) | 124 (91 – 184.5) | 151.2 (73.5) | 134.5 (102 – 180) | .077 |
| LDL-C (mg/dL) | 137.7 (33.2) | 131.6 (35.9) | .042 | ||
| HDL-C (mg/dL) | 48.5 (12.9) | 54.2 (13.8) | <.001 | ||
| Lipoprotein subfractions | |||||
| VLDL (nmol/L) | |||||
| Total | 92.5 (43.7) | 84.0 (61.2–117.9) | 89.8 (44.9) | 88.1(55.5–121.5) | .695 |
| Large | 4.4 (6.6) | 1.6 (0.6–5.7) | 2.5 (4.6) | 0.4 (0.1–2.8) | <.001 |
| Medium | 40.7 (32.0) | 33.8 (16.6–57.8) | 44.5 (35.4) | 39.6 (18.3–58.1) | .173 |
| Small | 47.4 (21.3) | 45.6 (33.8–58.4) | 42.8 (24.1) | 40.9 (26.1–55.4) | .007 |
| LDL (nmol/L) | |||||
| Total | .1,472.7 (398.5) | 1467.1(1171.3–1738.5) | 1,382.9 (439.2) | 1343 (1054–1677) | |
| Intermediate | 52.1 (49.1) | 41.8 (11.2–78.7) | 32.9 (41.7) | 16 (0–50) | .006 |
| Large | .535.0 (278.4) | 519.0 (311.6–725.0) | 512.4 (230.0) | 501(352–674) | <.001 |
| Small | 884.9 (505.8) | 799.7 (482.2–1271.3) | 837.6 (508.7) | 806.5(471–1179) | .484 |
| HDL (μmol/L) | |||||
| Total | 31.3 (5.9) | 30.9 (27.5–34.6) | 35.2 (6.5) | 34.8 (30.5–39.5) | .277 |
| Large | 5.1 (3.2) | 4.7 (2.8–7.0) | 8.7 (4.1) | 8.4 (5.5–11.7) | <.001 |
| Medium | 1.1 (2.2) | 0.03 (0–1.0) | 2.8 (4.4) | 1 (0–3.4) | <.001 |
| Small | 25.10 (4.47) | 25.2 (22.0–28.3) | 23.8 (5.5) | 24.2 (20.2–27.5) | .003 |
| Size (nm) | |||||
| VLDL | 49.75 (7.76) | 48.0 (44.7–53.0) | 44.0 (7.5) | 42.4 (39.2–48.5) | <.001 |
| LDL | 21.0 (.9) | 21.0 (20.3–21.7) | 21.1 (0.8) | 21.1 (20.4–21.7) | .281 |
| HDL | 8.6 (.5) | 8.5 (8.3–9.0) | 9.1 (0.5) | 9.1 (8.8–9.4) | <.001 |
Values are means (SD, standard deviation) and median (25th – 75th percentile) for continuous variables and number (percentages) for categorical variables.
Difference between white and Japanese men: P values for categorical variables were obtained from χ2 tests. P values for continuous variables were obtained from the t-test or Wilcoxon rank sum test
BP = blood pressure; BMI = body mass index; VAT = visceral adipose tissue; SAT = subcutaneous adipose tissue; WC = waist circumference; SAD = sagittal abdominal diameter; VLDL = very low density lipoprotein; LDL = low-density lipoprotein; HDL = high-density lipoprotein.