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Table 1 Fourfold table of OSTA comparing with LS BMD by DXA

From: Concordane of OSTA and lumbar spine BMD by DXA in identifying risk of osteoporosis

  LS BMD by DXA
  T ≤ -2.5 T ≤ -2.0
OSTA index OP non-OP total OP non-OP total
moderate-high risk 52 56 108 77 31 108
low risk 36 74 110 57 53 110
total 88 130 218 134 84 218