Table 1. Correlation between PEDF and clinicopathologic characteristics of patients with NPC.

		PEDF expression level
Characteristic	Number	Positive	Negative	P-value
T stage				0.018
T1–2	99	12 (12.1%)	87 (87.9%)
T3–4	119	4 (3.3%)	115 (96.7%)
N stage				0.292
N0–1	132	12 (9.1%)	120 (90.9%)
N2–3	86	4 (4.7%)	82 (95.3%)
Clinical staging				0.045
I–II	68	9 (13.2%)	59 (86.8%)
III–IV	150	7 (4.7%)	143 (95.3%)

P<0.05 were presented in bold and italic.