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J Clin Densitom. 2011 Jul-Sep;14(3):359-66. doi: 10.1016/j.jocd.2011.04.006. Epub 2011 Jun 11.

Osteoporotic fractures in the Brazilian community-dwelling elderly: prevalence and risk factors.

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Bone Metabolism Laboratory, Rheumatology Division, São Paulo, Brazil.


The risk of osteoporotic fractures is known to vary among populations. There are no studies analyzing concomitantly clinical, densitometric, and lab risk factors in miscigenated community-dwelling population of Brazil. A total of 1007 elderly subjects (600 women and 407 men) from São Paulo, were evaluated using a questionnaire that included risk factors for osteoporotic fractures. Bone mineral density (BMD) was measured by dual-energy X-ray absorptiometry at the hip and lumbar spine. Laboratory blood tests were also obtained. The prevalence of osteoporotic fractures was 13.2% (133 subjects), and the main fracture sites were distal forearm (6.0%), humerus (2.3%), femur (1.3%), and ribs (1.1%). Women had a higher prevalence (17.5%; 95% confidence interval [CI]: 14.6-20.6) than men (6.9%; 95% CI: 4.4-9.3) (p<0.001). After adjusting for significant variables, logistic regression revealed that female gender (odds ratio [OR]=2.7; 95% CI; 1.6-4.5; p<0.001), current smoking (OR=1.9; 95% CI: 1.2-3.3; p=0.013), and the femoral neck T-score (OR=0.7; 95% CI: 0.5-0.9; p=0.001) remain significant risk factors for osteoporotic fractures in the community-dwelling elderly. Our findings identified that female gender, current smoking, and low hip BMD are independent risk factors for osteoporotic fractures.

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