Table 1.
Coronary risk factors between Korean and Japanese men
| Korean (n=102) | Japanese (n=250) | P-value | |
|---|---|---|---|
| Age (years) | 44.8±2.8 | 45.2±2.8 | .283 |
| BMI (kg/m2) | 24.6±2.5 | 23.8±3.1 | .001 |
| Waist circumference (cm) | 84.2±7.2 | 85.3±8.3 | .421 |
| SBP (mmHg) | 123.8±15.0 | 125.1±16.4 | .601 |
| DBP (mmHg) | 80.0±11.5 | 76.5±11.9 | .006 |
| TC (mg/dL) | 182.0±27.6 | 218.5±36.3 | <.001 |
| LDL-C (mg/dL) | 111.3±27.2 | 134.1±35.5 | <.001 |
| HDL-C (mg/dL) | 41.9±9.3 | 53.6±12.9 | <.001 |
| TG (mg/dL) | 122.5 (92–173) | 137.5 (104–181) | .124 |
| TC/HDL-C ratio | 4.5±1.1 | 4.3±1.3 | .117 |
| Fasting glucose (mg/dL) | 100.0±12.2 | 105.9±16.0 | <.001 |
| Fasting insulin (µIU/mL) | 11.5±4.8 | 10.4±4.5 | .026 |
| Education (years) | 13.3±.3 | 14.3±.1 | .001 |
| Metabolic syndrome, yes (%) | 14.7 | 12.8 | .633 |
| Smoking | .009 | ||
| Current, yes (%) | 33.3 | 49.2 | |
| Past, yes (%) | 34.0 | 38.2 | |
| Pack-years of smoking | 10.3 (0–23) | 18.9 (3–30) | .003 |
| Alcohol drinking, yes (%) | 38.0 | 66.8 | >.999 |
| Ethanol consumption (g/day) | 10.0 (1.8–71.4) | 14.3 (2.0–42.5) | .184 |
| Hypertension, yes (%) | 21.6 | 26.4 | .416 |
| Diabetes mellitus, yes (%) | 3.9 | 4.8 | >.999 |
| Lipid lowering medication, yes (%) | 2.0 | 3.2 | .730 |
Abbreviation: BMI, body-mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; HDL-C, high-density-lipoprotein cholesterol; LDL-C, low-density-lipoprotein cholesterol; TG, triglycerides
Values are expressed as mean and standard deviation (SD) or median and inter-quartile range for continuous variables.
Metabolic syndrome denotes > three risk factors defined by NCEP-ATP III
Alcohol drinking denotes > two times of alcohol drinking per week
For continuous variables, a t-test or Wilconxon rank sum test was performed; for dichotomous variables, the chi-square test or Fisher’s exact test