Table 1. NHANES III study population characteristics.
| Variable | Non-Hispanic Whites(n = 2,631) | Non-Hispanic Blacks(n = 2,108) | Mexican Americans(n = 2,073) | P-value |
| Males, % | 40.0% | 42.6% | 49.4% | <0.0001 |
| Age (yr) | 50.2 (22.3) | 36.0 (18.3) | 37.1 (18.7) | <0.0001 |
| BMI (kg/m2) | 26.3 (5.6) | 27.3 (6.8) | 27.0 (5.6) | 0.093 |
| Lp(a) (mg/dL) | 20.3 (24.1) | 43.4 (32.8) | 14.9 (8.5) | <0.0001 |
| HDL-C (mg/dL) | 50.2 (15.6) | 53.8 (16.4) | 48.0 (13.1) | 0.112 |
| LDL-C (mg/dL) | 127.0 (38.0) | 118.8 (39.5) | 116.3 (34.1) | <0.0001 |
| TG (mg/dL) | 147.63 (116.8) | 108.8 (79.9) | 154.1 (121.2) | <0.0001 |
Study characteristics are shown for participants greater than 18 years of age who had non-missing Lp(a) levels. Samples sizes shown are the DNA samples available in Genetic NHANES III for each subpopulation. Values are shown as unweighted mean (SD). BMI, body mass index; Lp(a), lipoprotein(a); HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; TG, triglycerides. P-values are based on one-way unweighted ANOVA.