Multicollinearity in Regression Analyses Conducted in Epidemiologic Studies
Open accessAbstract
The adverse impact of ignoring multicollinearity on findings and data interpretation in regression analysis is very well documented in the statistical literature. The failure to identify and report multicollinearity could result in misleading interpretations of the results. A review of epidemiological literature in PubMed from January 2004 to December 2013, illustrated the need for a greater attention to identifying and minimizing the effect of multicollinearity in analysis of data from epidemiologic studies. We used simulated datasets and real life data from the Cameron County Hispanic Cohort to demonstrate the adverse effects of multicollinearity in the regression analysis and encourage researchers to consider the diagnostic for multicollinearity as one of the steps in regression analysis.
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All variance inflation factors were below 5.0, with mean VIF of 1.25, indicating acceptable levels of multicollinearity in the multivariable model.
“All variance inflation factors (VIFs) were below the threshold of 5.0, with mean VIF of 1.25, indicating acceptable levels of multicollinearity in our multivariable model (Table S1) [42].”
From Factors associated with postpartum depression symptoms following antepartum hospitalization (2026) · cites this paper as [42]
The Discussion (Multicollinearity diagnostic) identifies VIF greater than 5 as a suggested cutoff, supporting the citing paper’s reference to that threshold. But the Conclusions explicitly warn that VIF below 5 does not always indicate low multicollinearity, so the cited paper does not support treating the reported VIFs alone as proof of acceptable levels. The mean VIF of 1.25 is presented as a result from the citing authors’ own model, not as a result attributed to this source. (LLM, conf=0.85)
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- Authors
- P. Vatcheva, K., & Lee, M.
- Affiliations
- The University of Texas Health Science Center at Houston (US)
- ORCID
- Lee, MinJae
- Venue
- Epidemiology: Open Access
- Publisher
- OMICS Publishing Group
- Published
- 2016
- Volume
- 06
- Issue
- 02
- ISSN
- 2161-1165 (ISSN-L)
- PMC
- PMC4888898
- OpenAlex
- W2371547131
- Cited by
- 1,291
- References
- 1
- Citations by year
- 2026: 147 · 2025: 215 · 2024: 195 · 2023: 155 · 2022: 163 · 2021: 155 · 2020: 117 · 2019: 78 · 2018: 42 · 2017: 17 · 2016: 2 · 2014: 1
- FWCI
- 46.94
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- Epidemiology Open Access (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- ScholarWorks @ UTRGV (The University of Texas Rio Grande Valley) (submittedVersion, cc-by)
- Funders
- National Institutes of Health (UL1TR000371, TR000371)
- Center for Clinical and Translational Sciences, University of Texas Health Science Center at Houston (UL1TR000371, TR000371)
- National Center for Advancing Translational Sciences (TR000371)
- Topics
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Statistical Methods and Models
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Applications
- Keywords
- multicollinearity, regression analysis, epidemiological studies, interpretation of regression results, Cameron County Hispanic Cohort, simulated data
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