Skip to main content

Table 3 Relationship between observed and estimated LAVI in the validation set

From: Validation of evaluating left ventricular diastolic function with estimated left atrial volume from anteroposterior diameter

 

Equation 1

Equation 2

Intra-class correlationsa

  

 Coefficient (95% CI)

0.63 (0.55–0.70)

0.63 (0.55–0.70)

 P value

< 0.001

< 0.001

ROC analysesb

  

 Area under curve (95% CI)

0.85 (0.80–0.90)

0.84 (0.79–0.89)

 P value

< 0.001

< 0.001

Concordance testc

  

 κ coefficient

0.50

0.49

 Overall proportion of agreement

78.98%

78.98%

Bland–Altman analyses

  

 Mean difference

− 0.02

− 0.02

 Limits of agreement

− 14.73 to 14.68

− 14.80 to 14.76

  1. LAVI left atrial volume index, ROC receiver operating characteristic, CI confidence interval
  2. aIntra-class correlations between observed and estimated LAVI
  3. bIdentifying performance of estimated LAVI for observed LAVI > 34 mL/m2
  4. cConcordance between observed and estimated > 34 mL/m2