Fig. 4

Kaplan-Meier OS analysis according to baseline absolute monocyte count in patients with metastatic NPC. In the T1-2 subgroup (a), the T3-4 subgroup (b), the subgroup with metastasis at presentation (e), the subgroup with multiple metastasis lesions (h), the bone metastasis subgroup (i), the liver metastasis subgroup (j), the lung metastasis subgroup (k), and the extraregional lymph node metastasis subgroup (l), the OS rates are lower in the patients with a high absolute monocyte count than in those with a low count (all P < 0.05). In the N0-1 subgroup (c), the N2-3 subgroup (d), and the subgroup with metastasis after radical therapy (f), the OS rate is higher in the patients with a high absolute monocyte count than in those with a low count (all P < 0.001). In the subgroup with one metastasis lesion (g), there is no significant difference between the two curves (P = 0.070)