Table 1.
Characteristics of Study Participants at Baseline and Follow-up, by Race/Ethnicity, Bogalusa Heart Study, 2000–2010
| Characteristica | Whites (n = 342) |
Blacks (n = 104) |
P Valueb | Total (n = 446) |
|||
|---|---|---|---|---|---|---|---|
| Mean (SD) | % | Mean (SD) | % | Mean (SD) | % | ||
| Baseline | |||||||
| Age, years | 36.8 (4.2) | 35.6 (4.4) | 0.109 | 36.5 (4.3) | |||
| BMIc | 27.7 (5.8) | 28.7 (6.9) | 0.170 | 27.9 (6.1) | |||
| HR, beats/minute | 68.0 (8.4) | 69.5 (9.6) | 0.150 | 68.3 (8.7) | |||
| Smoking | 24.6 | 31.7 | 0.146 | 26.2 | |||
| Diabetes | 3.7 | 6.3 | 0.042 | 4.5 | |||
| SBP, mm Hg | 111.5 (10.2) | 116.9 (12.6) | <0.001 | 112.7 (11.0) | |||
| DBP, mm Hg | 75.8 (7.7) | 78.5 (9.1) | <0.001 | 76.5 (8.2) | |||
| afPWV, m/second | 5.1 (0.8) | 5.3 (1.0) | 0.008 | 5.1 (0.8) | |||
| C1,d mL/mm Hg × 10e | 15.6 (4.2) | 14.4 (4.3) | 0.012 | 15.3 (4.3) | |||
| C2,d mL/mm Hg × 100e | 6.7 (2.6) | 5.5 (2.5) | <0.001 | 6.3 (2.6) | |||
| SVR, dynes·second·cm−5 e | 1,297 (235) | 1,403 (284) | <0.001 | 1,326 (253) | |||
| Follow-up | |||||||
| Age, years | 43.6 (4.4) | 42.4 (4.5) | 0.024 | 43.3 (4.4) | |||
| BMI | 28.9 (6.1) | 30.1 (7.4) | 0.108 | 29.2 (6.4) | |||
| HR, beats/minute | 69.7 (8.9) | 71.4 (9.6) | 0.126 | 70.1 (9.1) | |||
| Smoking | 24.9 | 31.7 | 0.164 | 26.5 | |||
| Diabetes | 7.2 | 12.5 | 0.026 | 8.4 | |||
| SBP, mm Hg | 113.5 (11.7) | 120.5 (15.2) | <0.001 | 115.2 (13.0) | |||
| DBP, mm Hg | 79.3 (7.9) | 82.9 (11.0) | <0.001 | 80.1 (8.9) | |||
| afPWV, m/second | 6.9 (2.1) | 7.0 (1.9) | 0.328 | 6.9 (2.0) | |||
| C1, mL/mm Hg × 10e | 15.2 (4.4) | 13.2 (4.4) | <0.001 | 14.7 (4.5) | |||
| C2, mL/mm Hg × 100e | 6.2 (2.8) | 4.8 (2.1) | <0.001 | 5.8 (2.7) | |||
| SVR, dynes·second·cm−5 e | 1,358 (249) | 1,530 (339) | <0.001 | 1,405 (287) | |||
Abbreviations: afPWV, aortic-femoral pulse wave velocity; BMI, body mass index; DBP, diastolic blood pressure; HR, heart rate; SBP, systolic blood pressure; SVR, systemic vascular resistance.
a Unless otherwise noted, the total number of subjects was 446 (342 whites and 104 blacks), with 148 males and 194 females among whites and 39 males and 65 females among blacks.
b P values for racial/ethnic differences in continuous variables were adjusted for sex and age (except age itself).
c Weight (kg)/height (m)2.
d C1, large-artery (capacitive) compliance; C2, small-artery (oscillatory) compliance.
e The total number of subjects was 381 (277 whites and 104 blacks), with 116 males and 161 females among whites and 38 males and 66 females among blacks.