Validation and comparative evaluation of the osteoporosis self-assessment tool (OST) in a Caucasian population from
1University of Liège, Faculty of Medicine, Department of Public Health, Public Health and Epidemiology Unit, WHO Collaborating Center for Public Aspects of Osteoarticular Disorders, Belgium. florent.richy@ulg.ac.be
Background:
Risk indices have been developed to identify women at risk of low bone mineral density (BMD) who should undergo BMD testing.
Aim:
To compare the performance of four risk indices in White ambulatory women in Belgium.
Design:
Epidemiological cross-sectional study.
Methods:
Records were analysed for 4035 postmenopausal White women without Paget's disease or advanced osteoarthritis, seen at an out-patient osteoporosis centre between January 1996 and September 1999. Osteoporosis risk index scores were compared to bone density T-scores. The ability of each risk index to identify women with low BMD (T-score < -2.0) or osteoporosis (T < -2.5) was evaluated.
Results:
Using an Osteoporosis Self-Assessment Tool (OST) score <2 to recommend DXA referral, sensitivity ranged from 85% at the lumbar spine to 97% at the total hip to detect BMD T-scores of
Discussion:
The performance of these risk indices among women in Belgium was similar to that reported earlier for other samples in Asian countries, the US, and the Netherlands. The OST and other risk indices are effective and efficient tools to help target high-risk women for DXA testing.
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