Fractures of the hip and wrist are a costly and preventable threat to the health and survival of the elderly. A better understanding of the risk factors for hip and Colles' fractures will add to our knowledge about the etiology of this condition and help focus research and preventative efforts on those who are at greatest risk. We propose to characterize risk factors for hip and Colles' fractures in a multicenter prospective study of 9,600 elderly women followed quarterly for an average of 3.5 years. Our cohort will be a population-based sample of non-black women aged 65 or greater who are screened from 1986 thru 1988 at clinical centers in Pittsburgh, Portland, Maryland and Minneapolis. The Maryland center will recruit 2,400 participants by mail solicitation of holders of Maryland driving licenses, supplemented if necessary by solicitation of registered voters. At the baseline exam, we will measure a large set of potential historical and clinical predictors of fractures. We will use single-photon absorptiometry of the radius and also x-ray the hand, spine and hips to determine whether simple radiographic measurements can identify those with the greatest risk of fractures. We will also freeze serum from all participants at the outset and test the stability of hormone measurements that are shown to be stable will be the subject of a future study of the hormonal differences between women who suffer fractures and those who do not. We conservatively estimate that 165 hip and 150 Colles' fractures will occur, yielding a power of .90 to detect risk ratios of less than 2.0 for common risk factors. Our prospective design will yield more information with fewer biases than the previous (retrospective) studies on this topic, and our nested-case control analyses will minimize the costs of the expensive endocrinologic and radiologic measurements. The study cohort, and its bank of sera, x-rays, and clinical data is an excellent resource for future studies of osteoporosis, fractures and other diseases of the elderly. The results of our study will guide future research and rationalize clinical and public health efforts to prevent these fractures.

Agency
National Institute of Health (NIH)
Institute
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
Type
Research Project (R01)
Project #
1R01AR035584-01A1
Application #
3157271
Study Section
Epidemiology and Disease Control Subcommittee 3 (EDC)
Project Start
1986-02-01
Project End
1992-01-31
Budget Start
1986-02-01
Budget End
1987-01-31
Support Year
1
Fiscal Year
1986
Total Cost
Indirect Cost
Name
University of Maryland Baltimore
Department
Type
Schools of Medicine
DUNS #
003255213
City
Baltimore
State
MD
Country
United States
Zip Code
21201
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