Understanding Effect Size: Concept and Interpretation

Authors

  • Umar Hussain Saidu College of Dentistry, Saidu Sharif, Swat Pakistan
  • Khalid Rehman Khyber Medical University, Peshawar, Pakistan

DOI:

https://doi.org/10.52206/jsmc.2025.15.1.1071

Abstract

In scientific research writing, it's crucial to be clear and precise. However, sometimes, when we focus too much on whether results are statistically significant, we forget to think about how accurate and relevant they are clinically. While many researchers highlight the importance of p-values, considering other factors like confidence intervals (precision of effect estimate) and effect sizes for a more complete picture should not be underestimated. Effect size, often ignored, shows how big of an impact an intervention has. It is highly recommended to always report three main statistical measures while presenting the results: p-value, confidence interval, and effect size.

References

Hussain U, Ali F. Meaning of P-value. J Saidu Med Coll 2023 Dec 19;13(4):200-1. https://doi.org/10.52206/jsmc.2023.13.4.839

Hussain U, Khattak FA. Concept and Interpretation of Confidence Interval: How to Overcome Limitations of P-value. J Saidu Med Coll 2024 Mar 8;14(1):66-7. https://doi.org/10.52206/jsmc.2024.14.1.886

Pandis N. The effect size. Am J Orthod Dentofacial Orthop 2012;142(5):739-40. https://doi.org/10.1016/j.ajodo.2012.06.011

Valladares-Neto J. Effect size: A statistical basis for clinical practice. Revista Odonto Ciência 2018 Dec 30;33(1):84-90. https://doi.org/10.15448/19806523.2018.1.29437

Additional Files

Published

29-01-2025

How to Cite

1.
Hussain U, Rehman K. Understanding Effect Size: Concept and Interpretation. J Saidu Med Coll [Internet]. 2025 Jan. 29 [cited 2025 May 13];15(1):135-7. Available from: http://jsmc.pk/index.php/jsmc/article/view/1071

Issue

Vol. 15 No. 1 (2025): Journal of Saidu Medical College

Section

Short Communication

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