scholarly journals SPCalc: A web-based calculator for sample size and power calculations in micro-array studies

2006 ◽  
Vol 1 (7) ◽  
pp. 251-252 ◽  
Author(s):  
Weiliang Qiu ◽  
Mei-Ling Ting Lee
Keyword(s):  
Sample Size ◽  
Web Based ◽  
Power Calculations ◽  
Micro Array

scholarly journals Considerations of sample size and power calculations given a range of analytical scenarios

2021 ◽  
Author(s):  
Alice Carter ◽  
Kate Tilling ◽  
Marcus Robert Munafo
Keyword(s):  
Sample Size ◽  
Statistical Power ◽  
Poor Quality ◽  
Research Quality ◽  
Design Stage ◽  
Design Consideration ◽  
Power Calculations ◽  
Critical Design ◽  
Study Planning ◽  
Research Questions

The sample size of a study is a key design and planning consideration. However, sample size and power calculations are often either poorly reported or not reported at all, which suggests they may not form a routine part of study planning. Inadequate understanding of sample size and statistical power can result in poor quality studies. Journals increasingly require a justification of sample size, for example through the use of reporting checklists. However, for meaningful improvements in research quality to be made, researchers need to consider sample size and power at the design stage of a study, rather than at the publication stage. Here we briefly illustrate sample size and statistical power in the context of different research questions and how they should be viewed as a critical design consideration.

scholarly journals A Web-based Sample Size Calculator for Reliability Studies

2018 ◽  
Vol 10 (3) ◽  
pp. 67-76 ◽  
Author(s):  
Wan Nor Arifin ◽  
Keyword(s):  
Sample Size ◽  
Web Based
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