Blacks | Whites | |||||
---|---|---|---|---|---|---|

≥30 and <45 years old (n = 1,359) | ≥45 and <60 years old (n = 2,297) | ≥30 and <45 years old (n = 3,266) | ≥45 and <60 years old (n = 10,482) | |||

Characteristic | Mean (SD) or % | Mean (SD) or % | P value^{*} | Mean (SD) or % | Mean (SD) or % | P value^{*} |

Age (years) | 35.7 (3.5) | 51.1 (4.3) | — | 37.5 (3.8) | 52.0 (4.2) | — |

Women (%) | 58.7% | 62.9% | 0.06 | 52.9% | 54.5% | <0.001 |

SBP (mmHg) | 113.5 (13.8) | 125.7 (19.8) | 0.11 | 111.0 (12.6) | 118.1 (16.2) | <0.001 |

DBP (mmHg) | 75.2 (10.5) | 80.0 (11.9) | <0.001 | 73.2 (9.8) | 73.5 (10.2) | <0.001 |

Normal BP (%)^{†} | 61.1% | 26.3% | 0.008 | 67.6% | 48.4% | <0.001 |

Prehypertensive (%)^{†} | 25.6% | 25.6% | 24.3% | 27.7% | ||

Hypertensive (%)^{†} | 13.3% | 48.1% | 8.1% | 23.9% | ||

HDL-C (mg/dL) | 51.5 (14.2) | 56.3 (17.8) | <0.001 | 50.4 (13.9) | 51.6 (16.5) | 0.29 |

Triglycerides (mg/dL)^{‡} | 83.2 (60.9) | 104.8 (72.0) | 0.003 | 100.4 (79.8) | 128.0 (81.4) | <0.001 |

Fasting glucose (mg/dL) | 90.2 (8.7) | 98.5 (10.2) | <0.001 | 89.4 (8.0) | 97.1 (9.3) | <0.001 |

BMI (kg/m^{2}) | 29.1 (7.0) | 29.3 (6.0) | 0.27 | 25.7 (5.0) | 26.7 (4.7) | <0.001 |

Data are mean (SD) or percent, unless otherwise indicated. SD is from the unadjusted distribution. BP, blood pressure; DBP, diastolic blood pressure; SBP, systolic blood pressure.

↵*

*P*value from a simple χ^{2}or Student*t*test after adjustment for age and sex where appropriate.↵†Blood pressure categories: normal, SBP <120 and DBP <80 mmHg and not using antihypertensive medication; prehypertension, not hypertension and SBP 120–139 or DBP 80–89 mmHg; hypertension, SBP ≥140, DBP ≥90 mmHg, or using antihypertensive medication.

*P*values provided reflect the distribution of the three blood pressure categories between the two age-groups within each race.↵‡Means and SD from the untransformed distribution. Student

*t*test*P*value is from the natural log–transformed distribution.