Performance of the Osteoporosis Self-assessment Screening Tool for Osteoporosis in American Men

Adler, Robert A.; Tran, Mongthuong T.; Petkov, Valentina I.
June 2003
Mayo Clinic Proceedings;Jun2003, Vol. 78 Issue 6, p723
Academic Journal
• Objective: To determine whether the Osteoporosis Self-assessment Tool (OST) can predict central bone mineral density in men, as defined by dual energy x-ray absorptiometry (DXA). • Patients and Methods: We applied the OST index to men in pulmonary (evaluated January-May 2001) and rheumatology (evaluated November 2001-March 2002) clinics at a veterans hospital. The calculated OST risk index is based on weight and age. • Results: In 181 men, we arbitrarily defined osteoporosis as a DXA T score of -2.5 or less in the spine, total hip, or femoral neck. The mean age and weight of the men were 64.3 years and 91.2 kg; 15.6% had osteoporosis by DXA. The OST index ranged from -5 to 19, from which we categorized risk as follows: low, 4 or greater; moderate, -1 to 3; and high, -2 or less. Only 2.0% of men with a low-risk OST index had osteoporosis, whereas 27.0% with a moderate risk and 72.7% with a high risk had osteoporosis. Using an OST cutoff score of 3, we predicted osteoporosis with a sensitivity of 93% and a specificity of 66%. When patients were studied by age in decades, race, or current glucocorticoid use, the predictive value of the OST was maintained. • Conclusion: The OST is an easy method to predict osteoporosis by DXA.


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