highly significantP < 0.001
Osteocalcin displayed highly significant negative correlations with HbA1c (r = − 0.309, P < 0.001), CRP ( r = − 0.327, P < 0.001), FBG ( r = − 0.191, P = 0.031), IL-6 ( r = − 0.227, P = 0.010), and TNF-α ( r = − 0.184, P = 0.037).