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Table 3 Inter- observer agreement

From: Comparison of non-triggered magnetic resonance imaging and echocardiography for the assessment of left atrial volume and morphology

  Observer 1 Observer 2 Bias (LoA) %Bias Pearson r ICC (95% CI)
All Patients
 TTE, ml (±SD) 79 ± 27 77 ± 27 2 (−22–24) 2% 0.91a 0.95 (0.92–0.97)
 CE-MRA, ml (±SD) 111 ± 45 101 ± 43 10 (−6–25) 9% 0.98a 0.99 (0.99–0.99)
Sinus rhythm
 TTE, ml (±SD) (n = 41) 75 ± 19 72 ± 19 3 (−19–26) 5% 0.82a 0.90 (0.82–0.95)
 CE-MRA, ml (±SD) (n = 15) 92 ± 23 84 ± 23 9 (−6–23) 10% 0.95a 0.97 (0.92–0.99)
Atrial Fibrillation
 TTE, ml (±SD) (n = 24) 8 ± 37 86 ± 35 -2 (−25–22) 2% 0.95a 0.97 (0.94–0.99)
 CE-MRA, ml (±SD) (n = 14) 117 ± 35 110 ± 34 8 (−5–20) 7% 0.98a 0.99 (0.97–1.00)
  1. Abbreviations: CE-MRA contrast enhanced magnetic resonance imaging, ICC intraclass correlation coefficient, TTE transthoracic echocardiography
  2. aSignificant at p < 0.01