Table 2. Summary of NOX4 and EGFR expression in the lung cancer tissues.

	NOX4 expression (P<0.01)
	(−, +)	(++,+++)	Total
EGFR (−,+)	14 (27.5%)	37 (72.5%)	51 (53%)
EGFR (++,+++)	2 (4%)	43 (96%)	45 (47%)
Total	16 (17%)	80 (83%)	96 (100)

Abbreviation: EGFR=epidermal growth factor receptor.