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Table 5 ANOVA test and Post Hoc multiple comparisons of mean area fraction of mdm-2 immunopositivity in relation to different grades of MEC:

From: Image cytometric analysis of p53 and mdm-2 expression in primary and recurrent mucoepidermoid carcinoma of parotid gland: immunohistochemical study

Descriptive statistics (mdm-2)

Grade

Number of fields (Records)

Mean Area Fraction

Standard Deviation

Grade I

8

32.16375

1.264538

Grade II

32

35.95156

7.165884

Grade III

24

42.77000

5.654459

ANOVA (mdm-2)

  

Sum of Squares

df

Mean Square

F

P Value

Mdm-2

Between Groups

952.76

2

476.38

12.427

 
 

Within Groups

2338.42

61

38.33

 

0.0001

 

Total

3291.18

63

   

Post Hoc (Tukey HSD)

Dependent Variable

(I) Groups

(J) Groups.

Mean Diff

P Value

Significance

Mdm-2 Mean Area Fraction

Grade I

Grade II

-3.787812

< 0.001

S*

   

Grade III

-10.606250

< 0.001

S

  

Grade II

Grade III

- 6.818438

> 0.05

NS

  1. * The mean difference is significant at the 0.05 level