Table 3.
Baseline characteristics of the males in the derivation and validation cohorts
| Characteristic, males (n = 200) | Derivation cohort (n = 100) | Validation cohort (n = 100) | p-value |
|---|---|---|---|
| Age (years) | 49 ± 18 | 47 ± 18 | 0.40 |
| Female sex, n (%) | 0 (0%) | 0 (0%) | 1.0 |
| Height (cm) | 181 ± 14 | 180 ± 8 | 0.81 |
| Weight (kg) | 86 ± 14 | 85 ± 16 | 0.84 |
| BSA (m2) | 2.0 ± 0.3 | 2.1 ± 0.2 | 0.77 |
| LVEDV (ml) | 204 ± 64 | 207 ± 68 | 0.67 |
| LVEDVI (ml/m2) | 99 ± 29 | 100 ± 36 | 0.96 |
| LVESV (ml) | 103 ± 62 | 101 ± 64 | 0.71 |
| LVESVI (ml/m2) | 50 ± 29 | 49 ± 34 | 0.56 |
| LVSV (ml) | 99 ± 27 | 106 ± 24 | 0.047* |
| LVSVI (ml/m2) | 49 ± 16 | 52 ± 11 | 0.02* |
| LVEF (%) | 51 ± 12 | 54 ± 11 | 0.06 |
| LVM (g) | 166 ± 45 | 162 ± 51 | 1.0 |
| LVMI (g/m2) | 80 ± 20 | 80 ± 21 | 0.78 |
| ECV (%) | 27 ± 3 | 27 ± 4 | 0.60 |
| Hematocrit (%) | 42 ± 4 | 43 ± 4 | 0.41 |
| Septal wall thickness (mm) | 11 ± 2 | 11 ± 2 | 0.58 |
| Myocardial T1 (ms) | 1015 ± 39 | 1005 ± 46 | 0.10 |
| Mean blood R1 (ms−1) | 0.00066 ± 0.00004 | 0.00066 ± 0.00003 | 0.57 |
| Mean blood R1* (ms−1) | 0.00063 ± 0.00004 | 0.00063 ± 0.00004 | 0.98 |
Characteristics are given as mean ± standard deviations, or percentages as appropriate. p-values refer to comparison of derivation and validation cohort. *marks significant results