CEACAM5 and bone metastasis: The AUC values for UA, UAR, NLR, CEA, CA199 and CA724 in predicting bone metastasis were 0.705 [95% CI: 0.658–0.752, P < 0.001], 0.698 [95% CI: 0.650–0.746, P < 0.001], 0.738 [95% CI: 0.690–0.786, P < 0.001], 0.602 [95% CI: 0.549–0.655, P < 0.001], 0.576 [95% CI: 0.522–0.630, P = 0.007] and 0.578 [95% CI: 0.521–0.635, P = 0.005].