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Table 4 Prevalence of low bone mass (low QUS values), depended on different cutoff values of T-score, in Asian female populations

From: Screening for low bone mass with quantitative ultrasonography in a community without dual-energy X-ray absorptiometry: population-based survey

Age stratum (y) Present study Japan* Korea, Taiwan, and Vietnam
  T-score -2.5 T-score -1.0 T-score -2.5 T-score -1.0 T-score -2.5 T-score -1.0
40–49 6.7 38.4 0.7 32.1 ND ND
50–59 16.5 52.5 5.2 64.8 ND ND
60–69 41.0 79.1 18.7 88.7 ND ND
70–79 58.6 88.0 43.6 95.2 ND ND
≥50 37.5 72.0 ND ND 11.8, 20.0 26.8, 56.0§
≥60 50.9 84.1 ND ND 46.0, 50.6 61.8
  1. ND = no data.
  2. *In Japan, 12,201 women aged 40 years or older were screened with Achilles, Lunar ultrasonometry at the calcaneus. Healthy subjects were aged 20–29 years [11].
  3. In South Korea, 552 women older than 50 years underwent Achilles, Lunar ultrasonometry at the calcaneus. Healthy subjects were aged 20–29 years [12].
  4. In three Taiwanese communities, 2631 men and 3691 women aged 31 years or older were selected for UBIS-3000 ultrasonometry at the calcaneus. Healthy subjects were aged 31–40 years [13].
  5. §In Vietnam, 668 men and 1390 women aged 18 years or older underwent QUS-II ultrasonometry at the calcaneus. Age of peak BUA was estimated to be 27 and 32 years in men and women, respectively [14].