title: Adherence to predefined dietary patterns and incident type 2 diabetes in European populations: EPIC-InterAct Study.
abstract: OBJECTIVE
  Few studies have investigated the relationship between predefined dietary patterns and type 2 diabetes incidence; little is known about the generalisability of these associations. We aimed to assess the association between predefined dietary patterns and type 2 diabetes risk in European populations.
  
  
  METHODS
  From among a case-cohort of 12,403 incident diabetes cases and 16,154 subcohort members nested within the prospective European Prospective Investigation into Cancer and Nutrition study, we used data on 9,682 cases and 12,595 subcohort participants from seven countries. Habitual dietary intake was assessed at baseline with country-specific dietary questionnaires. Two diet-quality scores (alternative Healthy Eating Index [aHEI], Dietary Approaches to Stop Hypertension [DASH] score) and three reduced rank regression (RRR)-derived dietary-pattern scores were constructed. Country-specific HRs were calculated and combined using a random-effects meta-analysis.
  
  
  RESULTS
  After multivariable adjustment, including body size, the aHEI and DASH scores were not significantly associated with diabetes, although for the aHEI there was a tendency towards an inverse association in countries with higher mean age. We observed inverse associations of the three RRR-derived dietary-pattern scores with diabetes: HRs (95% CIs) for a 1-SD difference were 0.91 (0.86, 0.96), 0.92 (0.84, 1.01) and 0.87 (0.82, 0.92). Random-effects meta-analyses revealed heterogeneity between countries that was explainable by differences in the age of participants or the distribution of dietary intake.
  
  
  CONCLUSIONS
  Adherence to specific RRR-derived dietary patterns, commonly characterised by high intake of fruits or vegetables and low intake of processed meat, sugar-sweetened beverages and refined grains, may lower type 2 diabetes risk.
mesh_terms: D000328:Adult; D000368:Aged; D001628:Beverages; D002253:Carbonated Beverages; D016022:Case-Control Studies; D003611:Dairy Products; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology / Q000517:prevention & control*; D004032:Diet / Q000009:adverse effects* / Q000706:statistics & numerical data; D004034:Diet Surveys; D004041:Dietary Fats; D004044:Dietary Proteins; D002149:Energy Intake; D005060:Europe / Q000453:epidemiology; D005247:Feeding Behavior; D005260:Female; D005638:Fruit; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012307:Risk Factors; D040242:Risk Reduction Behavior; D011795:Surveys and Questionnaires; D013549:Sweetening Agents; D014675:Vegetables; D044465:White People
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins; D013549:Sweetening Agents