Sample Size Calculation Guide - Part 3: How to Calculate the Sample Size for an Independent Case-control Study

  • Nadien Khaled Fahim Faculty of Clinical Pharmacy, Zagazig University, Zagazig, El-Sharkia, Egypt http://orcid.org/0000-0002-0419-6034
  • Ahmed Negida Faculty of Medicine, Zagazig University, Zagazig, El-Sharkia https://orcid.org/0000-0001-5363-6369
  • Ahmed Khaled Fahim Ophthalmology Department, Nasser Institute Hospital, Cairo, Egypt

Abstract

In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion and how to calculate the sample size for an independent cohort study. In this article, we will explain how to calculate the sample size for an independent case-control study based on the odds ratios or two proportions representing the exposure rates in the case and the control groups.

Downloads

Download data is not yet available.

References

1. Fahim N, Negida A. Sample Size Calculation Guide - Part 1: How to Calculate the Sample Size Based on the Prevalence Rate. Adv J Emerg Med. 2018;2(4):e50.
2. Fahim NK, Negida A (2018) Sample Size Calculation Guide - Part 2: How to Calculate the Sample Size for an Independent Cohort Study. Adv J Emerg Med. 2019;3(1);e12.
3. Manomaivat T, Pongsiriwet S, Kuansuwan C, Thosaporn W, Tachasuttirut K, Iamaroon A. Association between hepatitis C infection in Thai patients with oral lichen planus: A case‐control study. J Investig Clin Dent. 2018;9(2):e12316.
Published
2019-02-20
How to Cite
Fahim, N., Negida, A., & Fahim, A. (2019). Sample Size Calculation Guide - Part 3: How to Calculate the Sample Size for an Independent Case-control Study. Advanced Journal of Emergency Medicine, 3(2), e20. https://doi.org/10.22114/ajem.v0i0.138
Section
Educational Notes in Research Methodology and Medical Statistics