Demographics and clinical characteristics of the patients with CHF.

<p>Data is presented as mean ± standard deviation or median (interquartile range) for continuous variables and counts (percentages) for categorical variables. P value by the student T test or Mann-Whitney U test for continuous variables and the Chi-Square Test for categorical variables.</p><p>CXR - Chest X ray. LA - left atrium. LV - left ventricle. EDD – end diastolic diameter. ESD – end systolic diameter. RVF – right ventricle function. PG –pressure gradient.</p

Predictors of death by Cox Regression analysis.

*<p>Log₁₀-transformed.</p

Kaplan Meier survival curves of patients with preserved versus reduced left ventricular function.

<p>The survival rate <b>[A]</b>, event-free rate of death or heart failure re-hospitalization <b>[B]</b> and event-free from all hospitalizations <b>[C]</b> of patients with preserved versus reduced LVF (N = 309). There was no significant difference in survival or clinical event-free rate between the groups.</p

Demographics and clinical characteristics of the patients.

Demographics and clinical characteristics of the patients.</p

Kaplan Meier survival analysis according to baseline QRS-T angle category stratified by gender.

<p>The tertile QRS-T angle percentiles were 40° and 103° in women and 51° and 125° in men. The estimated cumulative survival rate at the median follow-up time was reduced with increasing baseline QRS-T angle category; 67.9±1.5% vs. 61.2±1.5% vs. 52.1±1.6%, P<0.001.</p

Hazard ratio for mortality according to the difference in QRS-T angle between follow-up and baseline ECG by Cox regression analysis.

<p>Hazard ratio for mortality according to the difference in QRS-T angle between follow-up and baseline ECG by Cox regression analysis.</p

Predictors of mortality by Cox regression analysis.

<p>Predictors of mortality by Cox regression analysis.</p

Changes in the QRS-T angle.

<p>Histogram of the QRS-T angle difference in degrees between baseline and follow-up ECG. The continuous line denotes the normal distribution curve.</p

Relation between QRS-T angle and left ventricular systolic function.

<p><b>(A)</b> Scatter plot demonstrating an inverse linear relation between QRS-T angle and left ventricular ejection fraction. Linear regression: R² = 0.103, B = -1.06, Standard error 0.11, P<0.0001. <b>(B)</b> Box plot of the median QRS-T angle stratified according to the left ventricular ejection fraction. Median QRS-T angle was wider with reduction in left ventricular ejection fraction (Kruskal Wallis test; P<0.001). Box plots denote median and inter-quartile range (IQR); whiskers are of maximum 1.5 IQR.</p

Hazard ratio for clinical outcome according to QRS-T angle levels by Cox regression analysis.

<p>Hazard ratio for clinical outcome according to QRS-T angle levels by Cox regression analysis.</p