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Table 3 Univariate and multivariate analyses for continuous improvement of BMD for three years

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

Univariate analysis Continuous improvement Non-continuous improvement P-value
  Patients number 71 88  
  Age (years) 75.5 ± 10.1 73.2 ± 8.5 0.125
  BMI (kg/m2) 22.6 ± 3.5 23.5 ± 2.9 0.382
  Hypertension 27 (38.0 %) 32 (36.4 %) 0.829
  Diabetes 14 (19.7 %) 20 (22.7 %) 0.645
  Initial BMD (T-score) -3.76 ± 0.72 -3.74 ± 0.52 0.869
  Symptomatic LSS 23 (32.4 %) 53 (60.2 %) 0.000
Multivariate analysis Odds ratio 95 % Confidence interval P -value
  Symptomatic LSS 0.316 0.164–0.609 0.001
  1. BMD bone mineral density, BMI body mass index, LSS lumbar spinal stenosis