Examining the Moderating Role of a Mediterranean Diet in the Relationship Between Perceived Stress and Cognitive Function in Older Adults
Bibliographic record
Abstract
OBJECTIVES: Perceived stress and adherence to a Mediterranean diet pattern have been identified as independent predictors of cognitive function in older adulthood; however, no studies to date have examined the interaction between perceived stress and diet adherence on cognitive health. This cross-sectional study investigated the synergistic effect of perceived stress and adherence to a Mediterranean diet pattern on cognitive function in 192 nondemented older adults aged 60-95 years. METHOD: Participants completed a Food Frequency Questionnaire (FFQ) and the Perceived Stress Scale (PSS-10). Executive functioning was assessed using the Trail Making Test-Part B (TMT-B) and episodic memory was assessed using the immediate and delayed free recall subscales from the California Verbal Learning Test (CVLT-II). RESULTS: Moderation analyses revealed that higher perceived stress was associated with worse executive functioning at low levels of Mediterranean diet adherence (B = 1.75, SE = 0.67, p = .009), but not at moderate and high levels of Mediterranean diet adherence (ps > .05). Perceived stress was not associated with episodic memory, irrespective of Mediterranean diet adherence. DISCUSSION: Findings provide preliminary evidence that the association between higher perceived stress and poorer executive function may be dependent on diet intake. Additional research is needed to confirm these findings.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".