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Table 4 Inter- and intra-observer variability of LA and LV strain

From: Assessment of left atrioventricular coupling and left atrial function impairment in diabetes with and without hypertension using CMR feature tracking

 

intra-observer ICC (95%CI)

P value

inter-observer ICC (95%CI)

P value

LA strain

    

ε s

0.973(0.956,0.983)

< 0.001

0.899(0.845,0.935)

< 0.001

ε e

0.970(0.953,0.981)

< 0.001

0.874(0.806,0.918)

< 0.001

ε a

0.959(0.935,0.974)

< 0.001

0.804(0.702,0.873)

< 0.001

LV GLS

0.958(0.935,0.974)

< 0.001

0.875(0.809,0.919)

< 0.001

LA volume

    

LAVmax

0.964(0.922,0.982)

< 0.001

0.957(0.921,0.977)

< 0.001

LAVpre

0.965(0.935,0.981)

< 0.001

0.904(0.826,0.948)

< 0.001

LAVmin

0.993(0.987,0.996)

< 0.001

0.980(0.941,0.991)

< 0.001

  1. Abbreviations: εs, reservoir strain; εe, conduit strain; εa, booster strain; LV GLS, left ventricular global peak longitudinal strain;LAVmax: maximum left atrial volume index; LAVmin: minimum left atrial volume index; LAVpre: left atrial volume index just before left atrial contraction