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Table 4 Multivariable analysis of factors associated with serum NA levels in patients with SLE

From: Serum nitrated nucleosome levels in patients with systemic lupus erythematosus: a retrospective longitudinal cohort study

Variable Category/term Ratio (95% CI) P-value
Disease duration Ratio given per five-year increase 2.24 (1.55, 3.26) <0.001
Age (at diagnosis) * Age 0.01 (0.00, 0.04) <0.001
Age2 2.58 (1.86, 3.56)
Ethnicity Caucasian 1  
  Afro-Caribbean 2.99 (1.35,6.65)  
  Other 14.9 (5.82, 38.0) <0.001
Anti-La No 1  
  Yes 0.16 (0.06, 0.49) <0.001
Anti-Sm No 1  
  Yes 28.2 (14.4, 55.3) <0.001
Disease activity in renal system A, B 1  
  C, D, E 3.78 (2.07,6.90) <0.001
Immunosuppression No 1  
  Yes 1.45 (1.02, 2.05) 0.04
Albumin Ratio per 5 g/l increase 1.12 (1.01,1.24) 0.03
  1. *Ratio given for a 10-year increase. NA, nitrated albumin; SLE, systemic lupus erythematosus.