Table 2.

The evaluated microvessel density (MVD) with CD31 in different grades of histopathological diagnosis

	CD31 No. of specimens	CD31 MVD Mean	CD31 MVD 95% confidence interval (CI)	CD31 MVD Standard deviation (± SD)	CD31 MVD Standard error	CD31 MVD Range	p value
Non-dysplasia	20	12.47	8.53–16.40	8.41	1.88	3.00–33.33	0.02#/*
Low-grade dysplasia	20	21.23	14.47–28.00	14.46	3.23	5.33–56.00
							0.12#
High-grade dysplasia	17	13.74	10.89–16.60	5.56	1.35	5.67–23.67
							0.03#/*
Invasive cancer	20	20.11	15.77–24.46	9.28	2.07	6.00–45.33
All patients	77	17.01	14.60–19.43	10.63	1.21	3.00–56.00	0.01†/*

^#p value for the Mann–Whitney test for the comparison of values between the two groups

^†p value for Kruskal–Wallis for overall assessment of differences between groups

*Statistically significant p value (< 0.05)