Immunohistochemical expression of epithelial mesenchymal transition proteins ZEB1 and E-cadherin in oral leukoplakia and oral squamous cell carcinoma

Table 1 Comparison of E-cadherin expression with respect to intensity, location and percentage scores among the major study groups (oral epithelial dysplasia and oral squamous cell carcinoma) by Mann Whitney U test

E-cadherin expression	Intensity				Location						Percentage of positivity
	0	1	2	Value	0	1	2	3	4	Value	0	1	2	3	Value
OED (n = 30)	0	15	15	-	0	24	0	6	0	-	0	1	5	24	H = 17.898
OSCC (n = 30)	1	10	19	P = 0.4420	1	4	0	25	0	P = 0.0001b	1	5	9	15	P = 0.0315a

^aP < 0.05.

^bP < 0.01.

Intensity: 0: Negative, 1: Mild, 2: Moderate. Location: 0: Absent, 1: Membrane, 2: Membrane + cytoplasmic, 3: Cytoplasm. Percentage: 0: Absent, 1: 1%-25%, 2: 25%-50%, 3: > 50%. OED: Oral epithelial dysplasia; OSCC: Oral squamous cell carcinoma.