Epidermal Growth Factor Receptor Protein: A Biological Marker for Oral Precancer and Cancer

Table 3

(a) Quantitative assessment of EGFR in histological types of OSCC. (b) Multiple comparisons between the three histological types of OSCC.

(a)

Serial number	Extent of EGFR expression	Poorly differentiated; (PD) (𝑛=5)		Moderately differentiated; (MD) (𝑛=5)		Well differentiated; (WD) (𝑛=5)
		Number	%	Number	%	Number	%
1	0–25%	2	40	1	20	0	0
2	26–50%	0	0	0	0	0	0
3	51–75%	1	20	2	40	2	40
4	>75%	2	40	2	40	3	60
Mean ± SD		53.2±35.3		69.0±32.9		81.2±7.4
Range		15–90		15–95		75–93

𝜒²=2.686; 𝑃=0.612.

(b)

Serial number	Comparison	𝑍	𝑃
1	PD versus MD	0.841	0.421
2	PD versus WD	0.943	0.421
3	MD versus WD	0.318	0.841

Mann-Whitney 𝑈 test used.