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Table 1 Correlation of HO-1 expression with clinicopathological features of nasopharyngeal carcinoma

From: Implication of heme oxygenase-1 in the sensitivity of nasopharyngeal carcinomas to radiotherapy

Variable   No. of patients (HO-1 expression) P value c
   Total H + M a N b  
Age ≤ 61 18 11 7 0.673
  > 61 14 8 6  
Sex Male 20 13 7 0.873
  Female 12 6 6  
Stage I + II 13 5 8 0.266
  III + IV 9 14 5  
Histological differentiation G1 17 7 10 0.174
  G2 + G3 15 12 3  
  1. a Positive (H + M) expression of HO-1.
  2. b Negative (N) expression of HO-1.
  3. c Chi square test, P < 0.01 significant.