Table 4 The diagnostic sensitivity and specificity of CTC and CEA in patients with upper lobe, subsolid and ≥ 8-mm nodules. (N = 37)
Diagnostic method | Cutoff point | Sensitivity (%) | Specificity (%) | Youden Index value | AUC (95% CI) |
|---|---|---|---|---|---|
CTC (units) | 12 | 51.85 | 90.00 | 0.419 | 0.700 (0.527–0.839) |
CEA (ng/ml) | 1.78 | 62.96 | 80.00 | 0.429 | 0.681 (0.508–0.825) |
CTC + CEA | 12 /1.78 | 77.80 | 90.00 | 0.478 | 0.733 (0.566–0.900) |