Sample Size Calculation Guide - Part 2: How to Calculate the Sample Size for an Independent Cohort Study
Abstract
In the previous article, we explained how to calculate the sample size for a cross-sectional study based on a rate or a single proportion. In this article, we will explain how to calculate the sample size for an independent cohort study based on a comparison of two proportions representing the event rates in both the exposed and the non-exposed groups.
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. Gómez de la Torre-del Carpio A, Bocanegra-Jesús A, Guinetti-Ortiz K, Mayta-Tristán P, Valdivia-Vega R. Mortalidad precoz en pacientes con enfermedad renal crónica que inician hemodiálisis por urgencia en una población peruana: Incidencia y factores de riesgo. Nefrología. 2018;38(4):425–32.
2. Gómez de la Torre-del Carpio A, Bocanegra-Jesús A, Guinetti-Ortiz K, Mayta-Tristán P, Valdivia-Vega R. Mortalidad precoz en pacientes con enfermedad renal crónica que inician hemodiálisis por urgencia en una población peruana: Incidencia y factores de riesgo. Nefrología. 2018;38(4):425–32.
| Files | ||
| Issue | Vol 3 No 1 (2019): Winter (February) | |
| Section | Educational Notes in Research Methodology and Medical Statistics | |
| PMCID | PMC6548083 | |
| PMID | 31172123 | |
| Keywords | ||
| Sample Size | ||
| Rights and permissions | |
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
How to Cite
1.
Fahim N, Negida A. Sample Size Calculation Guide - Part 2: How to Calculate the Sample Size for an Independent Cohort Study. Front Emerg Med. 2018;3(1):e12.
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