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Table 2 Relationship between individual parameters and response to cardiac resynchronization therapy

From: Strain dyssynchrony index determined by three-dimensional speckle area tracking can predict response to cardiac resynchronization therapy

  AUC
(95% CI)
Cut-off Sensitivity
(95% CI)
Specificity
(95% CI)
p value
Area strain dyssynchrony index 0.93
(0.67-0.99)
3.8% 78%
(40%-97%)
100%
(48%-100%)
<0.001
Conventional dyssynchrony measurements      
   IVMD 0.73
(0.44-0.93)
40 ms 67%
(30%-93%)
60%
(15%-95%)
NS
   Yu Index 0.62
(0.33-0.86)
32 ms 11%
(0.3%-48%)
100%
(48%-100%)
NS
Radial dyssynchrony
determined by speckle
tracking strain
0.82
(0.53-0.97)
130 ms 100%
(66%-100%)
60%
(15%-95%)
<0.005
  1. AUC, area under the receiver operating characteristic curve; CI, confidence interval; IVMD, interventricular mechanical delay.