[Skip to Content]
[Skip to Content Landing]
Citations 0
March 6, 2002

Identifying Fracture Risk in Postmenopausal Women

Author Affiliations

Stephen J.LurieMD, PhD, Senior EditorIndividualAuthor

JAMA. 2002;287(9):1109-1110. doi:10.1001/jama.287.9.1109

To the Editor: Dr Siris and colleagues1 found that many asymptomatic postmenopausal women have previously undetected low bone mineral density (BMD). They also confirmed that peripheral bone densitometry, categorized according to T scores, is predictive of subsequent fracture risk in this population.

In this study, and often in clinical practice, the diagnostic threshold of a T score of −2.5 (BMD of 2.5 SDs below the peak adult value) is used. However, Siris et al found that the proportion of women with BMDs below this value varies dramatically by device, from 3.4% with heel ultrasound to 13.5% with finger dual-energy x-ray absorptiometry (DXA). When adjusted for age, weight, and other confounding factors, there was more than a 6-fold difference in the proportion below the threshold. Other studies have shown similar variations in the apparent prevalence of osteoporosis, as well as risk of fractures, when different devices are used with T-score thresholds.2,3

First Page Preview View Large
First page PDF preview
First page PDF preview