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Table 5 Correlation between HPV-16 expression and clinical characteristics of ESCC patients

From: Comparison of prevalence, viral load, physical status and expression of human papillomavirus-16, -18 and -58 in esophageal and cervical cancer: a case-control study

Characteristics No. HPV-16 * r P #
   - ± + ++   
Age (years)        
   53.13 ± 10.05 54 22 12 15 5 0.299 0.028
Lymph-node metastasis        
   Yes 36 16 8 9 3 0.115 0.408
   No 18 6 4 6 2   
Cancer grade        
   I 16 8 3 2 1 0.301 0.027
   II 28 13 8 8 3   
   III 10 1 1 5 1   
  1. * indicates positive on immunohistochemistry staining.
  2. # P values for the correlation between HPV-16 expression and clinical characteristics of ESCC patients were calculated by Spearman correlation or Fisher exact test as appropriate.