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Table 2 BMD, annual change of BMD, and a total change of BMD in the two groups

From: Effect of lumbar spinal stenosis on bone mineral density in osteoporosis patients treated with ibandronate

  Group 1
(osteoporosis)
Group 2
(osteoporosis + LSS)
P-value
BMD
  Initial -3.71 ± 0.49 -3.80 ± 0.77 0.388
  at 1-year F/U -3.39 ± 0.42 -3.58 ± 0.76 0.045
  at 2-year F/U -3.27 ± 0.48 -3.49 ± 0.75 0.034
  at 3-year F/U -3.13 ± 0.45 -3.45 ± 0.80 0.003
Annual change of BMD
  at 1-year F/U 0.32 ± 0.29 0.21 ± 0.34 0.036
  at 2-year F/U 0.12 ± 0.28 0.09 ± 0.44 0.702
  at 3-year F/U 0.14 ± 0.25 0.04 ± 0.41 0.069
Total change of BMD 0.57 ± 0.41 0.35 ± 0.50 0.002
  1. LSS lumbar spinal stenosis, BMD bone mineral density, F/U follow-up