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A review of software for sample size determination
1Virginia Commonwealth University, Richmond, VA 23284, USA. pdattalo@vcu.edu
Evaluation & the Health Professions
|August 22, 2009
Summary
Determining appropriate sample size is crucial for accurate statistical estimation. This review details various software programs, both free and commercial, to aid researchers in sample size calculations.
Area of Science:
- Biostatistics
- Statistical Software
Background:
- Accurate estimation of population values relies heavily on appropriate sample size.
- Researchers require tools to effectively determine the necessary sample size for their studies.
Purpose of the Study:
- To identify and describe available software programs for sample size determination.
- To categorize these programs based on their functionalities and features.
Main Methods:
- Categorization of programs into multiple procedure, single procedure, and web-based.
- Description of programs based on cost, ease of use, file management, and analytical capabilities.
Main Results:
- A comprehensive overview of free and commercial sample size determination programs is provided.
- Programs are evaluated based on user-friendliness, technical support, and data handling.
Conclusions:
- The article serves as a guide for selecting appropriate sample size software.
- Informed software selection can enhance the statistical precision of research findings.
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