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Table 1 Baseline characteristics of the derivation and validation cohorts

From: Blood correction reduces variability and gender differences in native myocardial T1 values at 1.5 T cardiovascular magnetic resonance – a derivation/validation approach

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
  1. 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