Table 1 Baseline characteristics of AS Biomarker Study (discovery cohort)
Characteristic | Overall N = 825 | Derivation N = 519 | Validation N = 306 | P value |
---|---|---|---|---|
Age (years) | 83 (77, 88); 0% | 84 (78, 88); 0% | 82 (76, 87); 0% | 0.010 |
Women | 359 (44%); 0.1% | 233 (45%); 0.2% | 126 (41%); 0% | 0.3 |
Race | 0.043 | |||
Black | 19 (2.3%); 0% | 17 (3.3%); 0% | 2 (0.7%); 0% | |
Asian | 8 (1.0%); 0% | 6 (1.2%); 0% | 2 (0.7%); 0% | |
Other | 2 (0.2%); 0% | 1 (0.2%); 0% | 1 (0.3%); 0% | |
White | 796 (96%); 0% | 495 (95%); 0% | 301 (98%); 0% | |
Body mass index (kg/m2) | 27.6 (24.3, 31.9); 0% | 27.3 (23.8, 31.4); 0% | 28.0 (24.8, 33.2); 0% | 0.010 |
Diabetes | 320 (39%); 0.1% | 184 (36%); 0.2% | 136 (44%); 0% | 0.011 |
Coronary artery disease | 577 (70%); 0.1% | 368 (71%); 0.2% | 209 (68%); 0% | 0.4 |
History of atrial fibrillation or flutter | 330 (40%); 0.5% | 200 (39%); 0.4% | 130 (43%); 0.7% | 0.2 |
LV ejection fraction (%) | 61 (53, 66); 3.2% | 61 (53, 66); 0% | 60 (52, 66); 8.5% | 0.3 |
LV mass index (g/m2) | 107 (90, 126); 18% | 108 (91, 126); 0% | 105 (90, 127); 47% | 0.8 |
LVH (ASE Grading) | 0.9 | |||
Normal | 346 (51%); 18% | 266 (51%); 0% | 80 (50%); 47% | |
Mild | 118 (17%); 18% | 87 (17%); 0% | 31 (19%); 47% | |
Moderate | 91 (13%); 18% | 69 (13%); 0% | 22 (14%); 47% | |
Severe | 125 (18%); 18% | 97 (19%); 0% | 28 (17%); 47% | |
LV end-systolic internal diameter index (mm/m2) | 15.5 (13.2, 18.7); 18% | 15.5 (13.4, 18.6); 0% | 15.1 (12.8, 18.7); 48% | 0.4 |
LV end-diastolic internal diameter index (mm/m2) | 23.3 (20.9, 26.1); 18% | 23.5 (21.2, 26.2); 0% | 22.4 (20.2, 25.5); 47% | 0.037 |
Relative wall thickness | 0.54 (0.45, 0.64); 18% | 0.54 (0.45, 0.64); 0% | 0.55 (0.45, 0.65); 47% | 0.4 |
LV end-systolic volume index (ml/m2) | 17 (12, 25); 22% | 17 (12, 25); 0% | 18 (12, 27); 59% | 0.5 |
LV end-diastolic volume index (ml/m2) | 44 (35, 55); 22% | 44 (35, 54); 0% | 45 (35, 55); 59% | 0.8 |
LV tissue Doppler S lateral annulus (m/s) | 0.065 (0.053, 0.078); 22% | 0.064 (0.053, 0.078); 0% | 0.065 (0.054, 0.076); 59% | 0.5 |
Stroke volume index (ml/m2) | 37 (29, 44); 16% | 37 (30, 45); 0% | 35 (28, 42); 42% | 0.044 |
Average transmitral E/e’ | 18 (14, 24); 26% | 18 (14, 24); 0% | 17 (12, 24); 69% | 0.4 |
Left atrial volume index (ml/m2) | 36 (27, 48); 17% | 35 (27, 47); 0% | 37 (30, 48); 46% | 0.2 |
Aortic valve mean gradient (mmHg) | 39 (31, 49); 2.8% | 39 (32, 50); 0% | 38 (30, 49); 7.5% | 0.3 |
High-sensitivity cardiac troponin (ng/ml) | 25 (16, 41); 2.9% | 25 (16, 41); 3.5% | 25 (16, 41); 2.0% | 0.8 |
NT-proBNP (pg/ml) | 1,277 (602, 3,281); 2.9% | 1,303 (622, 3,374); 3.5% | 1,238 (557, 3,049); 2.0% | 0.5 |
eGFR (ml/min/1.73m2) | 58 (45, 75); 0.7% | 58 (45, 75); 0.6% | 58 (44, 75); 1.0% | 0.5 |