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Table 2 Strain/Afterload Ratios Versus EF and Strain Rate

From: Myocardial contractility indices based on strain imaging

FT n Spearman r p
CST/CWS vs. EF NL 39 -0.51 0.0009
CST/PV/M vs. EF NL 39 -0.70 < 0.0001
CST/CWS vs. EF CM 35 -0.87 < 0.0001
CST/PV/M vs. EF CM 35 -0.88 < 0.0001
CST/CWS vs. CSR NL 39 0.68 < 0.0001
CST/PV/M vs. CSR NL 39 0.69 < 0.0001
CST/CWS vs. CSR CM 35 0.86 < 0.0001
CST/PV/M vs. CSR CM 35 0.90 < 0.0001
HARP    
CST/CWS vs. EF NL 38 -0.2 ns
CST/PV/M vs. EF NL 38 -0.54 0.0005
CST/CWS vs. EF CM 11 -0.72 0.013
CST/PV/M vs. EF CM 11 -0.80 0.003
CST/CWS vs. CSR NL 38 0.54 0.0005
CST/PV/M vs. CSR NL 38 0.52 0.0008
CST/CWS vs. CSR CM 11 0.55 ns
CST/PV/M vs. CSR CM 11 0.66 0.026