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Long-term a posteriori dietary patterns and risk of hip fractures in a cohort of women
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical pharmacogenomics and osteoporosis.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics. Karolinska Inst, Inst Environm Med, Div Nutr Epidemiol.
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2017 (English)In: European Journal of Epidemiology, ISSN 0393-2990, E-ISSN 1573-7284, Vol. 32, no 7, p. 605-616Article in journal (Refereed) Published
Abstract [en]

Dietary pattern analysis is a useful tool to study the importance of food components in the context of a diet and how they relate to health and disease. The association between dietary patterns and fractures is at present uncertain. We aimed to study associations between dietary patterns and risk of hip fracture in the Swedish Mammography Cohort, including 56,736 women (median baseline age 52 years). Diet data was collected in food frequency questionnaires at two investigations and dietary patterns were defined by principal component analysis using 31 food groups. Information on hip fractures was collected from the Swedish National Patient Register. Multivariable adjusted hazard ratios (HR) with 95% confidence intervals (CI) were estimated in Cox proportional hazards regression analysis. The two patterns identified-the healthy and Western/convenience dietary patterns-were time-updated and analysed. During a median follow-up time of 25.5 years, 4997 women experienced a hip fracture. Hip fracture rate was 31% lower in the highest compared to the lowest quartile of the healthy dietary pattern [HR (95% CI) 0.69 (0.64; 0.75)]. In contrast, women in the highest compared to the lowest quartile of the Western/convenience dietary pattern had a 50% higher [HR (95% CI) 1.50 (1.38; 1.62)] hip fracture rate. Further, in each stratum of a Western/convenience dietary pattern a higher adherence to a healthy dietary pattern was associated with less hip fractures. The present results suggest that a varied healthy diet may be beneficial for the prevention of fragility fractures in women.

Place, publisher, year, edition, pages
2017. Vol. 32, no 7, p. 605-616
Keyword [en]
Dietary pattern, Healthy dietary pattern, Western dietary pattern, Principal component analysis, Hip fractures, Food frequency questionnaire
National Category
Orthopaedics Public Health, Global Health, Social Medicine and Epidemiology
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URN: urn:nbn:se:uu:diva-334099DOI: 10.1007/s10654-017-0267-6ISI: 000408307500008OAI: oai:DiVA.org:uu-334099DiVA, id: diva2:1159017
Available from: 2017-11-21 Created: 2017-11-21 Last updated: 2018-02-22Bibliographically approved

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Warensjö Lemming, EvaByberg, LiisaMelhus, HåkanWolk, AlicjaMichaëlsson, Karl
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