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Table 4 Univariate and multiple logistic regression analyses for factors significantly associated with metabolic syndrome in patients with ankylosing spondylitis

From: Association between syndesmophyte and metabolic syndrome in patients with psoriatic arthritis or ankylosing spondylitis: a cross-sectional study

Variables Univariate analysis Multiple regression analysis
OR 95% CI OR 95% CI
Age > 40 4.09* 1.56–10.73 4.31* 1.43–13.01
Female gender 0.55 0.22–1.33 N/A N/A
History of smoking 0.94 0.29–3.03 N/A N/A
BMI > 23 kg/m2 8.51* 3.03–23.89 9.09* 3.13–26.36
Disease duration > 10 years 0.88 0.54–1.44 N/A N/A
No. of SynAnk 1.04** 0.99–1.09 1.0 0.94–1.06
ASDAS-CRP > 2.1 0.57 0.23–1.45 N/A N/A
  1. *Indicates a p-value < 0.05; **Indicates a p-value from 0.05 to < 0.2
  2. Abbreviations: OR Odds ratio; CI Confidence interval; BMI Body mass index; SynAnk Syndesmophyte or ankylosis; ASDAS-CRP Ankylosing Spondylitis Disease Activity - C-reactive protein; N/A Not applicable