Previously submitted to: JMIR Public Health and Surveillance (no longer under consideration since Mar 05, 2024)
Date Submitted: Nov 11, 2022
Open Peer Review Period: Nov 11, 2022 - Nov 25, 2022
(closed for review but you can still tweet)
NOTE: This is an unreviewed Preprint
Warning: This is a unreviewed preprint (What is a preprint?). Readers are warned that the document has not been peer-reviewed by expert/patient reviewers or an academic editor, may contain misleading claims, and is likely to undergo changes before final publication, if accepted, or may have been rejected/withdrawn (a note "no longer under consideration" will appear above).
Peer review me: Readers with interest and expertise are encouraged to sign up as peer-reviewer, if the paper is within an open peer-review period (in this case, a "Peer Review Me" button to sign up as reviewer is displayed above). All preprints currently open for review are listed here. Outside of the formal open peer-review period we encourage you to tweet about the preprint.
Citation: Please cite this preprint only for review purposes or for grant applications and CVs (if you are the author).
Final version: If our system detects a final peer-reviewed "version of record" (VoR) published in any journal, a link to that VoR will appear below. Readers are then encourage to cite the VoR instead of this preprint.
Settings: If you are the author, you can login and change the preprint display settings, but the preprint URL/DOI is supposed to be stable and citable, so it should not be removed once posted.
Submit: To post your own preprint, simply submit to any JMIR journal, and choose the appropriate settings to expose your submitted version as preprint.
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Assessment of dietary quality in American adults and its association with sociodemographic and metabolic syndrome-related biomarkers: Comparison of two samples from Midlife in the United States (MIDUS) study
ABSTRACT
Background:
An unhealthy diet ranks among the top contributors to the burden of noncommunicable chronic disease and death in the US, highlighting the importance of evaluating diet quality in population-based studies, such as the MIDUS (Midlife in the United States) cohort.
Objective:
1) To develop a simple tool (MIDUS healthy eating index (MIDUS-HEI)) to evaluate diet quality more broadly and consistently in subjects enrolled at different time points of the MIDUS study, and 2) To use this score in assessing the cross-sectional association of the overall dietary pattern with sociodemographic and health variables in MIDUS participants.
Methods:
We used extant food intake data collected from participants in two biomarker sub-studies of the MIDUS Core and Refresher national samples to design, test, and validate the dietary score tool through its cross-sectional association with available sociodemographic and health variables.
Results:
Our results indicated that better dietary quality was observed among older adults as well as white subjects and those with a higher educational status. According to the MIDUS-HEI score, dietary quality improved over time in MIDUS Refresher cohort compared to the MIDUS Core cohort. However, race-based disparities in dietary quality increased between the two survey times. Regarding health variables, MIDUS-HEI score was inversely associated with the prevalence of metabolic syndrome (MetS) and most of its diagnostic criteria.
Conclusions:
The MIDUS-HEI score is a useful indicator of quality of diet intake, exhibiting an inverse cross-sectional association with unhealthy diet-related biomarkers and MetS. Also, sociodemographic-dependent variations of this index were consistent with similar dietary pattern scores evident in other epidemiological studies. Thus, MIDUS-HEI represents a valuable tool for further analysis and discovery using the wide multidisciplinary scope of MIDUS.
Citation
Request queued. Please wait while the file is being generated. It may take some time.
Copyright
© The authors. All rights reserved. This is a privileged document currently under peer-review/community review (or an accepted/rejected manuscript). Authors have provided JMIR Publications with an exclusive license to publish this preprint on it's website for review and ahead-of-print citation purposes only. While the final peer-reviewed paper may be licensed under a cc-by license on publication, at this stage authors and publisher expressively prohibit redistribution of this draft paper other than for review purposes.