The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Dose‐response analyses using restricted cubic spline functions in public health research
Abstract
Taking into account a continuous exposure in regression models by using categorization, when non‐linear dose‐response associations are expected, have been widely criticized. As one alternative, restricted cubic spline (RCS) functions are powerful tools (i) to characterize a dose‐response association between a continuous exposure and an outcome, (ii) to visually and/or statistically check the assumption of linearity of the association, and (iii) to minimize residual confounding when adjusting for a continuous exposure. Because their implementation with SAS® software is limited, we developed and present here an SAS macro that (i) creates an RCS function of continuous exposures, (ii) displays graphs showing the dose‐response association with 95 per cent confidence interval between one main continuous exposure and an outcome when performing linear, logistic, or Cox models, as well as linear and logistic‐generalized estimating equations, and (iii) provides statistical tests for overall and non‐linear associations. We illustrate the SAS macro using the third National Health and Nutrition Examination Survey data to investigate adjusted dose‐response associations (with different models) between calcium intake and bone mineral density (linear regression), folate intake and hyperhomocysteinemia (logistic regression), and serum high‐density lipoprotein cholesterol and cardiovascular mortality (Cox model). Copyright © 2010 John Wiley & Sons, Ltd.
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Metadata
- Authors
- Desquilbet, L., & Mariotti, F.
- Venue
- Statistics in Medicine
- Publisher
- Wiley
- Published
- 2010-01-19
- Volume
- 29
- Issue
- 9
- Pages
- 1037-1057
- ISSN
- 0277-6715 (ISSN-L)
- 1097-0258
- OpenAlex
- W2150130690
- Cited by
- 1,980
- References
- 7
- FWCI
- 22.08
- Type
- journal article
- Language
- en
- Open access
- closed
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