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Smoking Predicts Incident Fractures in Elderly Men: Mr OS Sweden
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2010 (English)In: Journal of Bone and Mineral Research, ISSN 0884-0431, E-ISSN 1523-4681, Vol. 25, no 5, 1010-1016 p.Article in journal (Refereed) Published
Abstract [en]

The aim of the present study was to investigate the association between smoking and BMD, radiographically verified prevalent vertebral fractures and incident fractures in elderly men. At baseline 3003 men, aged 69 - 80 years old from the Swedish Mr Os study, completed a standard questionnaire concerning smoking habits and had BMD of the hip and spine measured using DXA; 1412 men had an X-ray of the thoracic-/lumbar spine. Radiological registers were used to confirm reported new fractures after the baseline visit. At baseline 8.4 % were current smokers. Current smokers had 6.2 % lower BMD at the total hip and 5.4 % at the lumbar spine (p<0.001). Current smoking remained independently, inversely associated with BMD at the hip and lumbar spine after adjusting for age, height, weight, calcium intake, physical activity and centres as co-variates. Prevalent vertebral fractures among current smokers were increased in unadjusted analyses (OR 1.90; 95% CI: 1.26-2.87) and after adjustment for lumbar BMD (OR 1.67; 1.09-2.55). Smokers had a high risk for two or more prevalent vertebral fractures (OR 3.18; 1.88-5.36). During the average follow-up of 3.3 years, 209 men sustained an X-ray verified fracture. Incident fracture risk among smokers was calculated with Cox proportional hazard models. Current smokers had increased risk of all new fractures (HR 1.76; 1.19-2.61), non-vertebral osteoporotic fractures defined as humerus, radius, pelvis and hip fractures (HR 2.14; 1.18-3.88), clinical and X-ray verified vertebral fractures (HR 2.53; 1.37-4.65) as well as of hip fracture (HR 3.16; 1.44-6.95). After adjustment for BMD, including other co-variates, no significant association between smoking and incident fractures was found. Current tobacco smoking in elderly men is associated with low BMD, prevalent vertebral fractures and incident fractures, especially vertebral and hip fractures.

Place, publisher, year, edition, pages
2010. Vol. 25, no 5, 1010-1016 p.
Keyword [en]
BMD, Incident fractures, Men, Prevalent vertebral fractures, Smoking
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-125033DOI: 10.1359/jbmr.091112ISI: 000278292100011PubMedID: 19929437OAI: oai:DiVA.org:uu-125033DiVA: diva2:318361
Available from: 2010-05-07 Created: 2010-05-07 Last updated: 2010-12-09Bibliographically approved

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Ljunggren, Östen
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