This study was designed to identify and assess risk factors for portal vein thrombosis (PVT) in patients with cirrhosis. A total of 98 cirrhosis patients with PVT were identified and 101 cirrhosis patients without PVT were chosen as the control group in this retrospective study. Several variables were measured and the two groups PVT and non-PVT were compared statistically. PVT was identified in 98 patients (10%). Significant differences in hematocrit, international normalized ratio, albumin, bilirubin and glucose were determined between the groups (P<0.05). Out of the thrombophilic risk factors in the patients with PVT factor V Leiden was identified in 8.8%, prothrombin gene 6.6% and methylenetetrahydrofolate reductase 2.2%. There was no difference in survival time between groups (P>0.05).
and power analysis is to determine the minimum number of individuals that have the ability to represent the population during the planning phase of the study. Since the statistical methods for each research plan are different, the calculation of sample size and power analysis will be calculates sample size and power analysis for hypothesis testing, diagnostic tests, correlation and regression analysis using the open source software R Shiny package and guides the researchers with examples. Material and Method: re packages, including shiny, shinydashboard, pwr, powerAnalysis, powerMediation, MKmisc and rhandsontable. Scripts were written for calculations that could not be done by these packa ges. Results: developed for the calculation of sample size and power analysis, and screen images of the results of these samples were given. accessible through http://biostatapps.inonu.edu.tr/WSSPAS. In the future studies, it is aimed to further strengthen the software by adding modules that can calculate sample size and power analysis for different multivariate statistical and machine learning methods.
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