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Table 5 Univariate and multivariate Cox regression analyses

From: Reduced fractional shortening of right ventricular outflow tract is associated with adverse outcomes in patients with left ventricular dysfunction

Univariate analysis Multivariate analysis
Variables HR 95% CI p value HR 95% CI p value
RVOT-FS 0.110 0.014-0.886 0.038 0.028 0.002-0.397 0.008
NYHA functional class III-IV 2.828 1.380-5.793 0.004 2.233 1.048-4.761 0.037
IVSTd 0.112 0.030-0.415 0.001    
Diuretic use 6.872 1.654-28.548 0.008    
BNP 1.000 1.000-1.001 0.018    
Total bilirubin 1.675 1.217-2.306 0.002    
  1. Univariate and multivariate Cox regression analyses were constructed with forward step-wise variable selection. HR hazard ratio, CI confidence interval. Covariates included age (year), sex (male, 1; female, 2); NYHA functional class III-IV (0, I-II; 1, III-IV); sinus rhythm in electrocardiogram (no, 0; yes, 1); BNP (pg/mL), eGFR (mL/min/1.73 m2), hemoglobin (g/dL), total bilirubin (mg/dL), uric acid (mg/dL) and C-reactive protein (mg/dL), echocardiographic parameters such as LAD (cm), IVSTd (cm), LVDd (cm), LVEF (%), RVFAC (%), RVOT-FS, TR-PG (mmHg); use (no, 0; yes, 1) of beta-blocker, ACE-I/ARB, calcium channel blocker, diuretic and aldosterone antagonist.