CRP and vitamin D deficiency: Multivariable analysis showed vitamin D deficiency (adjusted OR 7.1; 95% CI 2.5-19.4; <i>p</i> < 0.001) and hyperferritinemia (ferritin ≥ 200 μg/L; aOR 8.0, 95% CI 3.5-18.2, <i>p</i> < 0.001) as predictors of high CRP.