Sample Size Calculation Guide - Part 7: How to Calculate the Sample Size Based on a Correlation
Abstract
In the previous educational articles, we explained how to calculate the sample size for a rate or a single proportion, for an independent cohort study, for an independent case-control study, for a diagnostic test accuracy study, for a superiority clinical trial, and for a non-inferiority or equivalence clinical trial. In this article, we will explain how to calculate the sample size for a clinical study with the aim of detecting the correlation coefficient between two variables.
1. Fahim NK, 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. 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. Fahim NK, Negida A, Fahim AK. Sample size calculation guide - part 3: how to calculate the sample size for an independent case-control study. Adv J Emerg Med. 2019;3(2):e20.
4. Negida A, Fahim NK, Negida Y. Sample size calculation guide - part 4: how to calculate the sample size for a diagnostic test accuracy study based on sensitivity, specificity, and the area under the roc curve. Adv J Emerg Med. 2019;3(3):e33.
5. Negida A, Fahim NK, Negida Y, Ahmed H. Sample size calculation guide - part 5: How to calculate the sample size for a superiority clinical trial. Adv J Emerg Med. 2019;3(4):e49.
6. Negida A. Sample size calculation guide - part 6: How to calculate the sample size for a non-inferiority or an equivalence clinical trial. Adv J Emerg Med. 2020;4(1):e15.
7. McDonald AC, Vira M, Shen J, Sanda M, Raman JD, Liao J, Patil D, Taioli E. Circulating microRNAs in plasma as potential biomarkers for the early detection of prostate cancer. Prostate. 2018;78(6):411-8.
2. Fahim NK, Negida A. 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. Fahim NK, Negida A, Fahim AK. Sample size calculation guide - part 3: how to calculate the sample size for an independent case-control study. Adv J Emerg Med. 2019;3(2):e20.
4. Negida A, Fahim NK, Negida Y. Sample size calculation guide - part 4: how to calculate the sample size for a diagnostic test accuracy study based on sensitivity, specificity, and the area under the roc curve. Adv J Emerg Med. 2019;3(3):e33.
5. Negida A, Fahim NK, Negida Y, Ahmed H. Sample size calculation guide - part 5: How to calculate the sample size for a superiority clinical trial. Adv J Emerg Med. 2019;3(4):e49.
6. Negida A. Sample size calculation guide - part 6: How to calculate the sample size for a non-inferiority or an equivalence clinical trial. Adv J Emerg Med. 2020;4(1):e15.
7. McDonald AC, Vira M, Shen J, Sanda M, Raman JD, Liao J, Patil D, Taioli E. Circulating microRNAs in plasma as potential biomarkers for the early detection of prostate cancer. Prostate. 2018;78(6):411-8.
| Files | ||
| Issue | Vol 4 No 2 (2020): Spring (April) | |
| Section | Educational Notes in Research Methodology and Medical Statistics | |
| PMCID | PMC7163254 | |
| PMID | 32322802 | |
| 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.
Negida A. Sample Size Calculation Guide - Part 7: How to Calculate the Sample Size Based on a Correlation. Front Emerg Med. 2020;4(2):e34.
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