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Table 4 Results of histopathological examination in both study groups

From: Impact of mucosal biofilm and bony osteitis on chronic rhinosinusitis with nasal polyps

   Group   
   CRSwNP (n = 45) Control (n = 10)   
Variable   n % n % χ2(1) P value*
Bone grading Grade 0 5 11.1 4 40.0 1.074 0.300
Grade I 16 35.6 2 20.0
Grade II 19 42.2 2 20.0
Grade III 5 11.1 2 20.0
Mucosal grading Grade 0 1 2.2 6 60.0 19.636 < 0.001
Grade I 8 17.8 2 20.0
Grade II 28 62.2 2 20.0
Grade III 8 17.8 0 0.0
Tissue eosinophils Nil 0 0.0 4 40.0 25.834 < 0.001
Low 3 6.7 4 40.0
Moderate 6 13.3 0 0.0
High 36 80.0 2 20.0
Biofilm Negative 8 17.8 6 60.0 0.012#
Positive 37 82.2 4 40.0
  1. Data are number (n) and percentage (%)
  2. χ2 chi-squared statistic
  3. *Chi-squared test for trend unless otherwise indicated
  4. #Fisher’s exact test