After adjustment of BAZ , C-reactive protein was significantly associated with serum ferritin ( : 1.89 ; 95 % CI , 0.70-3 .09 ; P = .002 ) and soluble transferrin receptor ( : 0.88 ; 95 % CI , 0.16-0 .59 ; P = .017 ) ; interleukin-6 was significantly associated with serum ferritin ( : 1.22 ; 95 % CI , 0.64-1 .79 ; P < .0001 ) .