Table 2 Intra- and inter-observer reproducibilities.

From: Right to left ventricular volume ratio is associated with mortality in congenital diaphragmatic hernia

Intra-observer reproducibility

 

Bland–Altman analysis

ICC (95% CI)

 

Bias (95% CI)

LOA

RVEDV

−0.11 (−0.31 – 0.09)

−0.81 – 0.59

0.98 (0.95 – 0.99)

LVEDV

−0.01 (−0.15 – 0.12)

−0.49 – 0.47

0.97 (0.91 – 0.99)

LVEDV/RVEDV ratio

0.01 (−0.02 – 0.04)

−0.09 – 0.12

0.96 (0.89 – 0.99)

Inter-observer reproducibility

 

Bland–Altman analysis

ICC (95% CI)

 

Bias (95% CI)

LOA

RVEDV

−0.27 (−0.68 – 0.13)

−1.70 – 1.16

0.92 (0.77 – 0.97)

LVEDV

−0.04 (−0.27 – 0.19)

−0.85 – 0.77

0.92 (0.76 – 0.97)

LVEDV/RVEDV ratio

0.02 (−0.04 – 0.07)

−0.18 – 0.21

0.89 (0.67 – 0.96)

  1. RVEDV right ventricular end-diastolic volume, LVEDV left ventricular end-diastolic volume, LV/RV ratio left ventricular end-diastolic volume/right ventricular end-diastolic volume ratio, CI confidence interval, LOA limit of agreement, ICC intraclass correlation coefficient.
  2. ICC estimates and their 95% confidence intervals were calculated using MedCalc® Statistical Software, version 20 (MedCalc Software, Ltd., Ostend, Belgium) based on a mean-rating (k = 2), absolute-agreement, two-way mixed-effects model.
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