Search for: [Abstract = "test or the Kolmogorov\-Smirnov and Lillefors tests in case of large sample size. Variance analysis or the Kruskal\-Wallis test were used for comparison of continuous variables between the three EF groups. Nominal variables were compared using the Pearson's chi\-squared test or Fisher’s exact test \(using Monte Carlo simulation for tables larger than 3x3\). Survival analysis was conducted with the use of the Kaplan\-Meier estimator, while the survival curves were compared using the log\-rank test. It was assumed that p<0.05 indicates statistical significance. RESULTS Patients with HFrEF constituted the largest group \(61.15%\), followed by HFmrEF \(19.63\) and HFpEF \(19.22%\) patients. Inpatients comprised the largest group among Polish participants \(64.73%\). Patients affected by HFpEF were hospitalised significantly more often \(76.19%, p<0.001\). Specific patient groups differed significantly with regard to age \(p<0.001\). Men constituted majority of patients \(72.52%\). Significant differences in gender distribution were observed depending on the HF type \(p <0.001\). Significant differences in BMI values and in systolic and diastolic blood pressure values were observed across the particular HF types. Ischemic heart disease constitutes the most frequent cause of heart failure \(52.49%\). There were significant differences in the etiology distribution between individual HF types \(p <0.001\). Th"]
