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Table 4 Comparison of low bone mass condition between the comminuty population and a schizophrenic population in Taiwanese

From: Bone mass in schizophrenia and normal populations across different decades of life

  prevalence of low bone mass [t < 1.0] prevalence of severe low bone mass [t -2.5]
  Schizophrenic population in Yuli area Community population in Yuli area Community-surveyed People in Kinmen, Taiwan, 2000–2003§ Schizophrenic population in Yuli area Community people in Yuli area Community-surveyed People in Kinmen, Taiwan, 2000–2003§
  (%) (%) (%) (%) (%) (%)
Age Strata       
Male       
20–29 y/o 54.2 50.0 ----- 15.3 0 -----
30–39 y/o 42.9 33.3 ----- 9.8 0 -----
40–49 y/o 37.3 33.3 35.5 6.8 3.3 3.9
50–59 y/o 46.8 50.0 42.5 13.0 10.7 7.1
> 60 y/o 48.4 55.8 55.8 6.4 25.3 16.9
Female       
20–29 y/o 77.3 18.8 ----- 50.0 0 -----
30–39 y/o 50.0 18.2 ----- 26.2 0 -----
40–49 y/o 42.3 31.6 38.4 17.5 5.3 6.7
50–59 y/o 46.4 68.9 52.9 14.4 28.9 16.5
> 60 y/o 52.4 78.9 84.1 19.1 31.1 50.9
  1. Note: The above three population were screened for low bone mass using the same ultrasonography, QUS-II. The t-score was calculated using machine BUA value and adjusted as: (BUAindividual – 92.72)/13.36 for the male, and (BUAindividual – 87.90)/10.68 for the female. Those were based on the published reference§.
  2. §Nan-Ping Yang, Shao-Yuan Chuang, Shui-Hu Chen, Pesus Chou. Screening for low bone mass with quantitative ultrasonography in a community without dual X-ray absorptiometry: population-based study. BMC Musculoskeletal Disorders 2006;7:24.