Table 1. Characteristics (Mean±SD, %) of study variables by race and gender.
| Whites | Blacks | P for Race Difference | ||||
| Males | Females | Males | Females | Males | Females | |
| Children (4–18 years) | ||||||
| N | 804 | 773 | 529 | 508 | ||
| Age (years) | 10.8±3.5 | 10.8±3.5 | 11.2±3.6 | 11.2±3.6 | 0.062 | 0.029 |
| UA (mg/dL) | 4.5±1.4 | 4.1±1.1** | 4.1±1.4 | 3.6±1.0** | <0.001 | <0.001 |
| BMI (kg/m2) | 19.0±4.2 | 19.5±4.7* | 19.3±4.6 | 19.5±4.7 | 0.813 | 0.205 |
| MAP (mmHg) | 72.1±9.0 | 73.0±9.2* | 73.2±9.8 | 73.2±10.5 | 0.235 | 0.278 |
| Log-TG/HDLC | 0.21±0.55 | 0.32±0.53** | −0.06±0.45 | 0.03±0.43** | <0.001 | <0.001 |
| Log-HOMA | 0.42±0.55 | 0.60±0.60** | 0.44±0.60 | 0.62±0.66** | 0.923 | 0.796 |
| MetS (%) | 11.7 | 13.7 | 10.2 | 11.2 | 0.399 | 0.190 |
| Adults (19–54 years) | ||||||
| N | 743 | 939 | 329 | 436 | ||
| Age (years) | 33.2±8.8 | 32.7±8.9 | 31.3±9.1 | 30.4±8.5 | 0.002 | <0.001 |
| UA (mg/dL) | 6.1±1.3 | 4.2±1.1** | 6.0±1.5 | 4.2±1.2** | 0.460 | 0.991 |
| BMI (kg/m2) | 27.6±5.6 | 26.4±6.8** | 27.2±6.7 | 29.1±7.9** | 0.787 | <0.001 |
| MAP (mmHg) | 90.5±9.0 | 84.9±8.3** | 92.2±12.2 | 87.0±10.3** | <0.001 | <0.001 |
| Log-TG/HDLC | 1.06±0.80 | 0.68±0.66** | 0.57±0.71 | 0.30±0.51** | <0.001 | <0.001 |
| Log-HOMA | 0.70±0.68 | 0.58±0.64** | 0.59±0.73 | 0.79±0.67** | 0.036 | <0.001 |
| MetS (%) | 12.7 | 15.0 | 15.2 | 10.6 | 0.260 | 0.025 |
Gender difference within racial groups: * p<0.05, ** p<0.01;
UA = uric acid; BMI = body mass index; MAP = mean arterial pressure; TG/HDLC = ratio of triglycerides to HDL cholesterol; HOMA = homeostatic model assessment of insulin resistance.