The number/score of peripheral enthesitis sites was not correlated with Ankylosing Spondylitis Disease Activity Score (ASDAS) (r = 0.16, P = 0.22 and r = 0.15, P = 0.22, respectively), CRP (r = 0.12, P = 0.33 and r = 0.15, P = 0.24, respectively), ESR (r = 0.25, P = 0.10 and r = 0.30, P = 0.06, respectively), and disease duration (r = 0.11, P = 0.38 and r = 0.08, P = 0.50, respectively). Here, CRP is linked to enthesitis.