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

Mayo Clin Proc. 2003 Jun;78(6):723-7. doi: 10.4065/78.6.723.


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 -25 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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorptiometry, Photon
  • Aged
  • Area Under Curve
  • Bone Density*
  • Evaluation Studies as Topic
  • Humans
  • Male
  • Mass Screening / methods*
  • Middle Aged
  • Osteoporosis / diagnosis*
  • Osteoporosis / diagnostic imaging
  • Predictive Value of Tests
  • Prevalence
  • Risk Assessment
  • Risk Factors
  • Self Care*
  • Surveys and Questionnaires*
  • United States