TY  - JOUR
TI  - WSSPAS: An Interactive Web Application for Sample Size and Power Analysis with R Using Shiny
AB  - Objective: The calculation of sample size and power analysis plays an importantrole in biomedical research. The most general definition of the calculation of the sample sizeand power analysis is to determine the minimum number of individuals that have the ability torepresent the population during the planning phase of the study. Since the statistical methodsfor each research plan are different, the calculation of sample size and power analysis will bedifferent. Therefore, it is difficult to calculate the sample size and power analysis manually foreach clinical trial. The aim of this research is to develop a new user-friendly web-based tool thatcalculates sample size and power analysis for hypothesis testing, diagnostic tests, correlation andregression analysis using the open source software R Shiny package and guides the researcherswith examples. Material and Method: This web tool will be updated upon the updated R softwarepackages, including shiny, shinydashboard, pwr, powerAnalysis, powerMediation, MKmiscand rhandsontable. Scripts were written for calculations that could not be done by these packages.Results: Hypothetical samples were created to introduce menus in the web-based softwaredeveloped for the calculation of sample size and power analysis, and screen images of the resultsof these samples were given. Conclusion: The designed interactive web application is freelyaccessible through http://biostatapps.inonu.edu.tr/WSSPAS. In the future studies, it is aimedto further strengthen the software by adding modules that can calculate sample size and poweranalysis for different multivariate statistical and machine learning methods.
AU  - Yologlu, Saim
AU  - ÇOLAK, Cemil
AU  - ARSLAN, Ahmet Kadir
AU  - YAŞAR, Şeyma
DO  - 10.5336/biostatic.2018-62787
PY  - 2018
JO  - Türkiye Klinikleri Biyoistatistik Dergisi
VL  - 10
IS  - 3
SN  - 1308-7894
SP  - 224
EP  - 246
DB  - TRDizin
UR  - http://search/yayin/detay/310744
ER  -