Cochrane corner: does the Mediterranean-style diet help in the prevention of cardiovascular disease?
Bibliographic record
Abstract
There has been a longstanding interest in assessing the role of nutrition in human health. Diet is not merely the sum or combination of individual micronutrients and macronutrients. Indeed, the ancient Greek word ‘diaita’ means ‘way of living’, not just dietary needs, thus referring to the whole spectrum of life conditions: work, sleep, social environment and interactions, as well as daily activities. Over the last several decades, there has been increasing attention to investigate the potential benefits of whole dietary patterns in chronic disease prevention and management. Originating from Southern Europe, the traditional Mediterranean diet represents one of the most popular dietary patterns, with scientific investigations starting in the 1960s with the landmark Seven Countries study1 showing that populations in countries of the Mediterranean region, such as Greece and Italy, experienced lower cardiovascular mortality compared with northern European populations or the US population, likely as a result of different lifestyles including eating habits. Subsequently, a large body of observational data and meta-analyses of longitudinal prospective studies around the world have corroborated potential cardiometabolic benefits of the Mediterranean-style diet, with reduced rates of cardiovascular disease (CVD) and diabetes with increasing adherence to this dietary pattern. Experimental evidence also suggests potential mechanisms to explain the beneficial effect of the Mediterranean diet on cardiometabolic health. Key components of a Mediterranean dietary pattern are a high monounsaturated/saturated fat ratio (use of olive oil as main cooking ingredient and/or consumption of other traditional foods high in monounsaturated fats such as tree nuts) and a high intake of plant-based foods, including fruits, vegetables and legumes.2 Despite the consistent observational data, the trial evidence on the effectiveness of a Mediterranean-style diet in the prevention and management of major CVD is relatively limited or of questionable quality. This is a critical issue, as several scientific organisations …
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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 | 0.017 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.004 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.003 | 0.001 |
| Research integrity | 0.007 | 0.005 |
| Insufficient payload (model declined to judge) | 0.091 | 0.010 |
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".