ArticleRestorative dentistry & endodontics2024
An elaboration on sample size determination for correlations based on effect sizes and confidence interval width: a guide for researchers.
Article in Restorative dentistry & endodontics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
27 citing papers in PubMed.
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- Sampling Methods and Sample Size Determination in Clinical Research: An Educational Review.Journal of general and family medicine · 2026Review
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- Sperm DNA Fragmentation in Normozoospermic Men Is Associated with Blastocyst Formation and Quality in Conventional In Vitro Fertilization.Journal of clinical medicine · 2025Article
- Threshold-Anchored Mechanomyography Metrics for Patient Stratification in Spinal Decompression: Associations with Early Pain Outcomes.Journal of personalized medicine · 2025Article
- Evaluating the quantity and spatial density of macrophage-like cells in patients with retinal vascular disease and healthy subjects via non-invasive retinal imaging.International journal of retina and vitreous · 2025Article
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- Evaluation of the Influence of Intervention Tools Used in Nutrition Education Programs: A Mixed Approach.Nutrients · 2025Review
- Expanded span of control, leadership and management performance, work-related stress, and job satisfaction among first-line managers: A repeated cross-sectional study.Work (Reading, Mass.) · 2025Article
- Osteoprotegerin and its ligands RANKL and TRAIL in falciparum, vivax, and knowlesi malaria.iScience · 2025Article
- Examining the link between intensive care unit nurses' burnout and perceived quality of life: a multicenter cross-sectional study.BMC nursing · 2025Article
Corrections and comments
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Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objectives: This paper aims to serve as a useful guide for sample size determination for various correlation analyses that are based on effect sizes and confidence interval width. Materials and Methods: Sample size determinations are calculated for Pearson's correlation, Spearman's rank correlation, and Kendall's Tau-b correlation. Examples of sample size statements and their justification are also included. Results: Using the same effect sizes, there are differences between the sample size determination of the 3 statistical tests. Based on an empirical calculation, a minimum sample size of 149 is usually adequate for performing both parametric and non-parametric correlation analysis to determine at least a moderate to an excellent degree of correlation with acceptable confidence interval width. Conclusions: Determining data assumption(s) is one of the challenges to offering a valid technique to estimate the required sample size for correlation analyses. Sample size tables are provided and these will help researchers to estimate a minimum sample size requirement based on correlation analyses.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.