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Table 4 Logistic regression models predicting 25OHD deficiency in African-Americans, n = 1162

From: Disease-specific definitions of vitamin D deficiency need to be established in autoimmune and non-autoimmune chronic diseases: a retrospective comparison of three chronic diseases

  OR (95% CI) P-value
SLE 1.0 -
RA 1.22 (0.45, 3.27) 0.695
T2DM 2.4 (1.2, 4.7) 0.014
Age, for every decade 0.81 (0.74, 0.89) <0.001
Male gender 1.1 (0.79, 1.5) 0.608
October - March season 1.4 (1.1, 1.8) 0.013
Serum calcium, mg/dl 0.76 (0.64, 0.89) 0.001
Vitamin D supplementation 0.84 (0.62, 1.12) 0.23
Bisphosphonate therapy 0.55 (0.33, 1.12) 0.02
Serum creatinine >1.5 mg/dl 1.6 (1.16, 2.2) 0.004
  1. SLE, systemic lupus erythematosus; RA, rheumatoid arthritis; T2DM, type 2 diabetes mellitus; 25OHD, 25hydroxyvitamin D; OR, odds ratio; C, confidence interval.