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Table 2 Association between PD-L1 expression in malignant salivary gland tumor membrane and clinico-pathological factorsa

From: PD-L1 expression in malignant salivary gland tumors

Characteristic % Positive tumor cell membrane   p-value
  < 5% (negative) (n = 23, 48.9%), n 5% or more (positive) (n = 24, 51.1%), n Total (n = 47)‚ n  
Gender     > 0.999
 Male 13 13 26  
 Female 10 21 21  
Age     > 0.999
 65≥ 13 12 25  
 65< 10 12 22  
Stage     0.047
 I + II 17 10 27  
 III + IV 6 14 20  
Recurrence or metastasis after surgery    0.028
 No 19 12 31  
 Yes 4 12 16  
Outcome     0.002
 Alive 22 13 35  
 Death 1 11 12  
  1. aFisher’s exact test