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Generalizability of a Diabetes-Associated Country-Specific Exploratory Dietary Pattern Is Feasible Across European Populations
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2019 (English)In: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 149, no 6, p. 1047-1055Article in journal (Refereed) Published
Abstract [en]

Background: Population-specificity of exploratory dietary patterns limits their generalizability in investigations with type 2 diabetes incidence.

Objective: The aim of this study was to derive country-specific exploratory dietary patterns, investigate their association with type 2 diabetes incidence, and replicate diabetes-associated dietary patterns in other countries.

Methods: Dietary intake data were used, assessed by country-specific questionnaires at baseline of 11,183 incident diabetes cases and 14,694 subcohort members (mean age 52.9 y) from 8 countries, nested within the European Prospective Investigation into Cancer and Nutrition study (mean follow-up time 6.9 y). Exploratory dietary patterns were derived by principal component analysis. HRs for incident type 2 diabetes were calculated by Prentice-weighted Cox proportional hazard regression models. Diabetes-associated dietary patterns were simplified or replicated to be applicable in other countries. A meta-analysis across all countries evaluated the generalizability of the diabetes-association.

Results: Two dietary patterns per country/UK-center, of which overall 3 dietary patterns were diabetes-associated, were identified. A risk-lowering French dietary pattern was not confirmed across other countries: pooled HRFrance per 1 SD: 1.00; 95% CI: 0.90, 1.10. Risk-increasing dietary patterns, derived in Spain and UK-Norfolk, were confirmed, but only the latter statistically significantly: HRSpain: 1.09; 95% CI: 0.97, 1.22 and HRUK-Norfolk: 1.12; 95% CI: 1.04, 1.20. Respectively, this dietary pattern was characterized by relatively high intakes of potatoes, processed meat, vegetable oils, sugar, cake and cookies, and tea.

Conclusions: Only few country/center-specific dietary patterns (3 of 18) were statistically significantly associated with diabetes incidence in this multicountry European study population. One pattern, whose association with diabetes was confirmed across other countries, showed overlaps in the food groups potatoes and processed meat with identified diabetes-associated dietary patterns from other studies. The study demonstrates that replication of associations of exploratory patterns with health outcomes is feasible and a necessary step to overcome population-specificity in associations from such analyses.

Place, publisher, year, edition, pages
Oxford University Press, 2019. Vol. 149, no 6, p. 1047-1055
Keywords [en]
dietary patterns, principal component analysis, diet-disease association, type 2 diabetes mellitus, replication, meta-analysis
National Category
Nutrition and Dietetics
Identifiers
URN: urn:nbn:se:umu:diva-160601DOI: 10.1093/jn/nxz031ISI: 000469881600020PubMedID: 31149710OAI: oai:DiVA.org:umu-160601DiVA, id: diva2:1329138
Funder
Swedish Research CouncilNovo NordiskSwedish Diabetes AssociationSwedish Heart Lung FoundationVästerbotten County CouncilAvailable from: 2019-06-24 Created: 2019-06-24 Last updated: 2019-06-24Bibliographically approved

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Franks, Paul W.Rolandsson, Olov

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Agnoli, ClaudiaCayssials, ValerieDahm, Christina C.Franks, Paul W.Overvad, KimRolandsson, Olov
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