Clinical significance and prognostic value of tumor necrosis factor-α and dickkopf related protein-1 in ankylosing spondylitis

Figure 3 Diagnostic value of dickkopf-related protein-1 and tumor necrosis factor-α in ankylosing spondylitis. The area under the curve, cutoff value, sensitivity and specificity of dickkopf-related protein-1 for diagnosing ankylosing spondylitis were 0.752, 87.02 pg/mL, 78.76% and 66.00% respectively, and those of tumor necrosis factor-α were 0.904, 18.79 ng/L, 79.65% and 95.00%. The area under the curve, sensitivity and specificity of combined diagnosis were 0.934, 82.30% and 97.00% respectively. TNF-α: Tumor necrosis factor-α; DKK: dickkopf-related protein-1.