Table 3 Determinants of LVEF and LVEF <50% in multivariate analysis in all study patients.

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

Variables

LVEF

LVEF <50%

Unstandardized coefficient β (95% CI)

P value

Odds ratio (95% CI)

P value

rPEP (per 1 ms)

–

 

1.023 (0.999, 1.048)

0.056

rET (per 1 ms)

–

 

0.970 (0.949, 0.992)

0.008

rPEP/rET

−0.116 (−0.230, −0.002)

0.046

2.145 (1.145, 4.021)

0.017

PEP (per 1 ms)

−0.002 (−0.003, −0.001)

<0.001

1.105 (1.028, 1.189)

0.007

ET (per 1 ms)

–

 

0.970 (0.945, 0.997)

0.028

PEP/ET

−0.508 (−0.721, −0.296)

<0.001

5.114 (1.695, 15.424)

0.004

  1. Abbreviations. CI, confidence interval; ET, ejection time; LVEF, left ventricular ejection fraction; PEP, pre-ejection period; rET, renal ejection time; rPEP, renal pre-ejection period. In logistic regression analysis, an increase of 1 unit of rPEP/rET and PEP/ET was equal to an increase of 1 standard deviation (0.11 and 0.07, respectively). In linear and logistic multivariate models, covariates included the significant variables in univariate analysis (in Table 2) plus rPEP, rET, rPEP/rET and PEP, ET, PEP/ET, respectively.
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