Table 4 The statistical values of rPEP, rET, rPEP/rET, PEP, ET, and PEP/ET in prediction of LVEF <50%.

From: Systolic time intervals derived from electrocardiographic gated intra-renal artery Doppler waveform associated with left ventricular systolic function

 

Odds ratio (95% CI)

P value

Sensitivity

Specificity

Accuracy

rPEP > 139.4 ms

7.965 (3.489, 18.181)

<0.001

63.3

83.6

73.5

rET < 294.1 ms

6.067 (2.562, 14.370)

<0.001

70.0

83.6

76.8

rPEP/rET > 0.46

13.956 (5.376, 36.230)

<0.001

76.7

78.1

77.4

PEP > 76.50 ms

10.811 (4.420, 26.444)

<0.001

71.4

81.6

76.5

ET <281.7 ms

5.019 (2.177, 11.573)

<0.001

64.3

73.5

68.9

PEP/ET > 0.27

12.891 (5.225, 31.804)

<0.001

71.4

83.2

77.3

  1. Abbreviations. CI, confidence interval; LVEF, left ventricular ejection fraction; PEP, pre-ejection period; ET, ejection time; rET, renal ejection time; rPEP, renal.
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