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KMID : 0981820090290010001
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Korean Journal of Laboratory Medicine
2009 Volume.29 No. 1 p.1 ~ p.9
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Correct Use of Repeated Measures Analysis of Variance
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Park Eun-Sik
Ki Chang-Seok
Cho Mi-Hye
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Abstract
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Background : In biomedical research, researchers frequently use statistical procedures such as the t-test, standard analysis of variance (ANOVA), or the repeated measures ANOVA to compare means between the groups of interest. There are frequently some misuses in applying these procedures since the conditions of the experiments or statistical assumptions necessary to apply these procedures are not fully taken into consideration. In this paper, we demonstrate the correct use of repeated measures ANOVA to prevent or minimize ethical or scientific problems due to its misuse. We also describe the appropriate use of multiple comparison tests for follow-up analysis in repeated measures ANOVA. Finally, we demonstrate the use of repeated measures ANOVA by using real data and the statistical software package SPSS (SPSS Inc., USA). (Korean J Lab Med 2008;28:1-9)
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KEYWORD
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Ethics, ANOVA, Repeated measures, Multiple comparison
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