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Table 4 Intra-rater reliability per rater for the pulmonary transit time (PTT). Raters 1,2,3, and 8 are physicians and raters 4,5,6, and 7 are technicians. The mean PTTs of the fifteen patients are expressed with their standard deviation at time moment 1 and 2, measured by each rater

From: Reliability, repeatability, and reproducibility of pulmonary transit time assessment by contrast enhanced echocardiography

  ICC (95 % CI) Mean PTT t1 (± SD) Mean PTT t2 (± SD)
Rater 1 0.91 (0.76–0.97) 11.86 (3.14) 12.13 (3.14)
Rater 2 0.99 (0.99–1.00) 11.77 (3.00) 11.69 (2.99)
Rater 3 0.92 (0.79–0.97) 11.82 (3.08) 11.49 (3.22)
Rater 4 0.99 (0.99–1.00) 11.64 (2.89) 11.70 (2.96)
Rater 5 0.99 (0.98–1.00) 11.84 (3.09) 11.82 (2.99)
Rater 6 0.99 (0.99–1.00) 11.76 (3.12) 11.71 (3.03)
Rater 7 0.99 (0.98–1.00) 11.65 (2.95) 11.60 (2.93)
Rater 8 0.81 (0.54–0.93) 12.17 (4.15) 11.60 (2.96)
  1. ICC intra-class correlation coefficient, CI confidence interval, SD standard deviation, t1 time moment 1, t2 time moment 2