Table 1.
Characteristic | Derivation cohort (n = 200)a | Validation cohort (n = 200)a | p-value |
---|---|---|---|
Age (years) | 51 ± 18 | 48 ± 17 | 0.14 |
Female sex, n (%) | 100 (50%) | 100 (50%) | 1.0 |
Height (cm) | 173 ± 14 | 174 ± 10 | 0.44 |
Weight (kg) | 77 ± 16 | 78 ± 18 | 0.79 |
BSA (m2) | 1.9 ± 0.3 | 1.9 ± 0.2 | 0.95 |
LVEDV (ml) | 180 ± 63 | 183 ± 63 | 0.56 |
LVEDVI (ml/m2) | 94 ± 29 | 95 ± 32 | 0.61 |
LVESV (ml) | 91 ± 57 | 88 ± 57 | 0.81 |
LVESVI (ml/m2) | 47 ± 28 | 46 ± 29 | 0.95 |
LVSV (ml) | 89 ± 27 | 95 ± 25 | 0.02* |
LVSVI (ml/m2) | 47 ± 14 | 50 ± 11 | 0.01* |
LVEF (%) | 52 ± 12 | 54 ± 11 | 0.06 |
LVM (g) | 138 ± 46 | 137 ± 53 | 0.75 |
LVMI (g/m2) | 71 ± 19 | 72 ± 23 | 0.95 |
ECV (%) | 28 ± 4 | 28 ± 4 | 0.51 |
Hematocrit (%) | 40 ± 4 | 40 ± 5 | 0.71 |
Septal wall thickness (mm) | 10 ± 2 | 10 ± 2 | 0.45 |
Myocardial T1 (ms) | 1030 ± 43 | 1023 ± 45 | 0.07 |
Mean blood R1 (ms−1) | 0.00064 ± 0.00004 | 0.00064 ± 0.00004 | 0.49 |
Mean blood R1* (ms−1) | 0.00061 ± 0.00005 | 0.00061 ± 0.00005 | 0.98 |
Characteristics are given as means ± standard deviations, or percentages as appropriate. p-values refer to comparison of mean values between derivation and validation cohort. *marks significant result. aData missing for LV volumes, EF and mass (n = 2), and ECV (n = 4) in the derivation cohort. Data missing for ECV (n = 2) in the validation cohort