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Table 3 Correlation between the clinicopathologic characteristics and expression of MMP9 protein in NPC

From: Increased expression of MMP9 is correlated with poor prognosis of nasopharyngeal carcinoma

   MMP9 (%)  
Characteristics n High expression Low expression P
Gender     
Male 116 94(81.0) 22 (19.0)  
Female 48 33(43.6) 15 (56.4) 0.102
Age( y)     
≥50 81 61 (75.3) 20 (24.7)  
<50 83 66 (47.7) 17(52.3) 0.577
Smoking     
Yes 39 31 (79.5) 8 (20.5)  
No 125 96 (76.8) 29 (23.2) 0.828
T classification     
T1-T2 116 85 (73.3) 31(26.7)  
T3-T4 48 42 (87.5) 6(12.5) 0.064
N classification     
N0-N1 74 49 (66.2) 25 (33.8)  
N2-N3 90 78 (86.7) 12 (13.3) 0.002
Distant metastasis     
Yes 8 7 (87.5) 1 (12.5)  
No 156 120 (76.9) 36 (23.1) 0.685
Clinical stage     
I~II 55 30 (54.5) 25 (45.5)  
III~IV 109 97 (89) 12(11) 0.000