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Table 2 Univariate and multivariate logistic regression analyses of factors associated with serum 25-hydroxyvitamin D3 levels deficiency in the 619 patients

From: Influencing factors on serum 25-hydroxyvitamin D3 levels in Japanese chronic hepatitis C patients

  Univariate Multivariate
Factors Category OR 95 % CI p value OR 95 % CI p value
Gender Female 2.316 1.667–3.217 5.49 × 10−7 2.290 1.479–3.545 2.03 × 10−4
Age By 1 year up 1.014 0.999–1.030 0.073 1.038 1.017–1.060 4.30 × 10−4
Fib-4 Index By 0.1 up 1.076 1.007–1.150 0.031    
Season Cold season 1.520 1.092–2.114 0.013 1.586 1.095–2.297 0.015
Hemoglobin By 1 g/dL down 1.249 1.123–1.387 3.64 × 10−5 1.165 1.009–1.345 0.037
Total-cholesterol By 1 mg/dL down 1.006 1.001–1.012 0.012    
Albumin By 0.1 down 1.898 1.278–2.817 0.001    
Prothrombin time By 1 % down 1.011 1.000–1.022 0.042    
  1. Serum 25-hydroxyvitamin D3 levels of 20 ng/ml or less were defined as vitamin D deficiency. Multivariate analysis was performed with factors associated with serum 25-hydroxyvitamin D3 levels deficiency by univariate analysis (p < 0.10). We defined the cases that serum 25-hydroxyvitamin D3 levels were measured between November and April as cold season