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Table 6 Multiple logistic regression analysis of factors associated with bone mineral density <70 % of young adult mean

From: Risk of low bone mineral density in patients with rheumatoid arthritis treated with biologics

Feature Odds ratio 95 % confidence intervals p value
Age (per 1 year increase) 1.065 1.015–1.101 0.003*
sex 5.019 1.367–18.43 0.015*
Disease duration (per 1 year increase) 1.077 1.028–1.128 0.002*
History of past vertebral fracture 7.708 2.505–23.72 <0.001*
BMI (per 1 point increase) 0.766 0.665–0.883 <0.001*
Steinbrocker classification 2.302 1.473–3.597 <0.001*
  1. BMD bone mineral density, BMI body mass index