Use of Effect Size in medical research: A brief primer on its why and how

Authors

  • L Manoj Kumar PhD Scholar, Asst Professor, St Thomas College of Nursing, Kerala
  • Jayan Stephen Associate Professor in Surgery, Govt Medical College, Trivandrum
  • Rinu George PhD Scholar, Associate Professor, Department of Child Health Nursing, Shri Shankaracharya College of Nursing, Bhilai, India.
  • GL Harikrishna Assistant Professor, Govt Nursing College, Trivandrum, India
  • PS Anisha Assistant Professor, Govt Nursing College, Kottayam, India.

DOI:

https://doi.org/10.30834/KJP.35.1.2022.322

References

Cohen J. Things I have learned (so far). Am Psychol. 1990; 45:1304–1312.

Kline RB. Beyond Significance Testing: Reforming Data Analysis Methods in Behavioral Research. Washington DC: American Psychological Association; 2004. p. 95.

Schäfer T, Schwarz MA. The Meaningfulness of Effect Sizes in Psychological Research: Differences Between Sub-Disciplines and the Impact of Potential Biases. Frontiers in Psychology [Internet]. 2019;10. Available from: https://www.frontiersin.org/article/10.3389/fpsyg.2019.00813.

Fritz CO, Morris PE, Richler JJ. Effect size estimates: Current use, calculations, and interpretation. Journal of Experimental Psychology: General. 2012;141(1):2–18.

Thalheimer W, Cook S. How to calculate effect sizes from published research: A simplified methodology. Work learning research. 2009 Jan 1; 1-9.

Lenhard W, Lenhard A. Computation of Effect Sizes [Internet]. Unpublished; 2017 [cited 2022 Mar 15]. Available from: http://rgdoi.net/10.13140/RG.2.2.17823.92329.

Sullivan GM, Feinn R. Using Effect Size—or Why the P-Value Is Not Enough. Journal of Graduate Medical Education. 2012 Sep 1;4(3):279–82.

Lakens D. Calculating and reporting effect sizes to facilitate cumulative science: a practical primer for t-tests and ANOVAs. Frontiers in Psychology [Internet]. 2013;4. Available from: https://www.frontiersin.org/article/10.3389/fpsyg.2013.00863

Tomczak M, Tomczak E. The need to report effect size estimates revisited. An overview of some recommended measures of effect size. 2014 Jan 1; 21:19–25.

Ahn E, Kang H. Introduction to systematic review and meta-analysis. Korean J Anesthesiol. 2018 Apr;71(2):103-112. doi: 10.4097/kjae.2018.71.2.103. Epub 2018 Apr 2. PMID: 29619782; PMCID: PMC5903119.

Lipsey MW, Wilson DB. The efficacy of psychological, educational, and behavioral treatment. Confirmation from meta-analysis. Am Psychol. 1993 Dec;48(12):1181-209.

Spielmans GI, Rosen GM, Spence-Sing T. Tapping Away at a Misleading Meta-analysis: No Evidence for Specificity of Acupoint Tapping. The Journal of Nervous and Mental Disease. 2020 Aug;208(8):628–31.

Effect Size Calculator [Internet]. [cited 2022 Feb 10]. Available from: https://www.cem.org/effect-size-calculator.

Effect Size Calculators [Internet]. [cited 2022 Mar 15]. Available from: https://lbecker.uccs.edu/.

The Campbell Collaboration [Internet]. [cited 2022 Feb 10]. Available from: https://www.campbellcollaboration.org/404

Downloads

Published

2022-05-22

How to Cite

Manoj Kumar, . L., Stephen, J. ., George, R. ., Harikrishna, . G., & Anisha, . P. (2022). Use of Effect Size in medical research: A brief primer on its why and how. Kerala Journal of Psychiatry, 35(1), 78–82. https://doi.org/10.30834/KJP.35.1.2022.322

Issue

Section

Brief Overview