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Table 2 Inter-study reproducibility

From: Quantification of atrial dynamics using cardiovascular magnetic resonance: inter-study reproducibility

   Left atrium Right atrium
   Mean difference ± 2 SD CoV (%) ICC (95 % CI) Mean difference ± 2 SD CoV (%) ICC (95 % CI)
Atrial function Volumetric index (%)       
Reservoir; global EF Total 1.5 ± 5.8 4.5 0.94 (0.81-0.98) 0.5 ± 8.0 7.5 0.96 (0.87-0.98)
Conduit EF Passive 0.6 ± 11.3 12.6 0.84 (0.54-0.94) 1.9 ± 9.0 13.9 0.91 (0.75-0.97)
Booster pump EF Booster 0.8 ± 8.5 21.6 0.71 (0.19-0.90) 1.4 ± 8.2 19.4 0.73 (0.26-0.90)
  Strain (%)       
Reservoir εs 0.3 ± 3.5 5.7 0.97 (0.92-0.99) 0.5 ± 11.1 16.6 0.89 (0.68-0.96)
Conduit εe 0.5 ± 3.9 8.2 0.97 (0.90-0.99) 0.6 ± 9.1 20.7 0.84 (0.53-0.94)
Booster pump εa 0.2 ± 2.7 18.3 0.95 (0.85-0.98) 0.1 ± 5.6 24.3 0.89 (0.68-0.96)
  Strain Rate (s −1 )       
Reservoir SRs 0.0 ± 0.2 8.2 0.96 (0.87-0.99) 0.0 ± 0.6 24.0 0.76 (0.29-0.92)
Conduit SRe 0.2 ± 0.5 18.5 0.78 (0.36-0.93) 0.1 ± 0.6 35.9 0.67 (0.05-0.89)
Booster pump SRa 0.0 ± 0.4 22.7 0.91 (0.75-0.97) 0.1 ± 0.7 32.2 0.90 (0.73-0.97)
  Atrial volume (ml)       
  Maximum 1.0 ± 8.8 6.8 0.98 (0.94-0.99) 0.9 ± 19.5 12.4 0.96 (0.88-0.99)
  Minimum 1.2 ± 4.6 10.0 0.98 (0.92-0.99) 0.8 ± 10.1 13.7 0.97 (0.93-0.99)
  Prior to atrial contraction 0.8 ± 7.3 10.3 0.97 (0.92-0.99) 1.9 ± 14.2 13.2 0.97 (0.91-0.99)
  1. Inter-study reproducibility for left and right atrial functional parameters and volumes as determined by Bland-Altman analysis (mean difference ± 2SD), coefficients of variation (CoV) and intra-class correlation coefficients (ICC).
  2. SD, standard deviation; CoV, coefficient of variation; ICC, intraclass correlation coefficient; CI, confidence interval.