Table 4

ANOVA test and Post Hoc multiple comparisons of mean area fraction of p53 immunopositivity in relation to different grades of MEC:

Descriptive statistics (P53)


Grade

Number of fields (Records)

Mean Area Fraction

Standard Deviation


Grade I

12

13.18917

1.426180


Grade II

44

20.91700

5.846319


Grade III

32

25.26250

7.679862


ANOVA (p53)


P53

Sum of Squares

df

Mean Square

F

P Value


Between Groups

1295.4

2

647.68

16.478

0.0001


Within Groups

3183.8

81

39.31


Total

686.99

83


Post Hoc (Tukey HSD)


Dependent Variable

(I) Groups

(J) Groups

Mean Diff.

P Value

Significance


P53 Mean Area Fraction

Grade I

Grade II

-7.727833

< 0.001

S*


Grade III

-12.073333

< 0.001

S


Grade II

Grade III

- 4.345500

< 0.001

S


* The mean difference is significant at the 0.05 level

Abd-Elhamid and Elmalahy Diagnostic Pathology 2010 5:72   doi:10.1186/1746-1596-5-72

Open Data