Fig. 3.

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