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Table 4 Intra- and interobserver variability for LASr derived from TTE and ICE

From: Left atrial reservoir strain measurements derived from intracardiac echocardiography in patients with atrial fibrillation: comparison with transthoracic echocardiography

 

Patients with sinus rhythm

Patients with AF rhythm

Intraobserver

Interobserver

Intraobserver

Interobserver

ICC [95%CI]

ICC [95%CI]

ICC [95%CI]

ICC [95%CI]

LASrTTE

0.974 [0.923–0.991]

0.983 [0.942–0.995]

0.995 [0.980–0.990]

0.972 [0.892–0.993]

LASrLAA

0.992 [0.976–0.997]

0.960 [0.756–0.989]

0.952 [0.543–0.990]

0.963 [0.848–0.991]

LASrLPV

0.953 [0.860–0.984]

0.942 [0.750–0.983]

0.992 [0.966–0.998]

0.972 [0.886–0.993]

LASrLAX

0.998 [0.964–0.996]

0.984 [0.923–0.995]

0.962 [0.854–0.991]

0.948 [0.797–0.987]

LASrAPD

0.985 [0.953–0.995]

0.940 [0.764–0.982]

0.973 [0.811–0.994]

0.927 [0.705–0.982]

  1. CI Confidence interval, ICC Intraclass correlation coefficient