Calculation of statistical power in association studies using SPSS syntax
DOI:
https://doi.org/10.1344/reire2021.14.232580Keywords:
Correlation, Statistical power, SPSS syntaxAbstract
INTRODUCTION. The study of the association between two variables is expressed analytically with the statistic known as the correlation coefficient. Frequently, we find associations that are relevant but do not reach statistical significance. We therefore wonder whether the hypothesis test has sufficient statistical power to detect differences when they actually exist. Unfortunately, SPSS does not calculate the power for association studies of quantitative variables. For this reason, we propose the use of SPSS syntax to calculate statistical power in the scenario of association studies, and present a practical case. METHODS. An SPSS syntax file is provided to calculate statistical power in association studies. DISCUSSION. The use of the syntax file will be useful for researchers familiar with SPSS who need to calculate statistical power in association studies.References
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