Table 1 Descriptive characteristics of the study population along the quartiles of augmentation index (Al).
Variables [mean (SD) or %] | All (n = 182) | Q1 | Q2 | Q3 | Q4 | P trend |
|---|---|---|---|---|---|---|
Age in years (SD) | 51 (10) | 46.26 (9.6) | 49.42 (9.18) | 52.97 (9.96) | 55.91 (7.83) | < 0.0001 |
% female | 74 | 41.30 | 77.78 | 82.22 | 93.33 | < 0.0001 |
Race | ||||||
White | 77.1 | 68.89 | 93.18 | 78.57 | 68.18 | 0.503 |
African American | 16.6 | 26.67 | 4.55 | 11.90 | 22.73 | |
Other | 6.3 | 4.44 | 2.27 | 7.14 | 9.09 | |
BMI [kg/m2] (SD) | 34.2 (6) | 37.20 (6.3) | 35.20 (5.7) | 33.11 (5.3) | 31.26 (5.1) | < 0.0001 |
SBP [mmHg] (SD) | 134 (15.2) | 132.52 (12.1) | 133.38 (13.6) | 134.64 (16.5) | 137.09 (17.5) | 0.343 |
DBP [mmHg] (SD) | 83 (9.2) | 84.06 (8.5) | 82.53 (8.5) | 82.36 (9.6) | 82.02 (10.2) | 0.288 |
Heart rate [HR] | 73 (11) | 72.39 (11.0) | 74.58 (9.1) | 74.38 (12.7) | 70.76 (11.3) | 0.278 |
Glucose [mg/dL] | 105 (37.3) | 99.20 (27.5) | 106.53 (46.5) | 114 (45.7) | 100.17 (23.5) | 0.325 |
CRP [mg/L] | 6 (7.8) | 7.24 (12.8) | 5.81 (5.7) | 6.26 (6.1) | 4.08 (3.0) | 0.355 |
% diabetes mellitus | 29 | 21.74 | 37.78 | 31.11 | 24.44 | 0.950 |
% lifetime smoker | 34 | 26.67 | 31.11 | 44.19 | 35.56 | 0.215 |
Physical activity [min/ day] | 1.68 (0.5) | 1.62 (0.5) | 1.67 (0.5) | 1.68 (0.5) | 1.73 (0.5) | 0.303 |