Table 2. GTSP1 expression according to smoking and drinking habits.

A: GSTP1 expression in non-tumor margins; B: GSTP1 expression in tumor.

A
GTSP1non-tumor margin	SD low	SD high		total	p¥
NSND low	1 (6.3%)§	9 (56.3%)¶		10 (62.5%)	0.004
NSND high	0¶	6 (37.5%)§		6 (37.5%)
B
GTSP1 tumor	SD low	SD high		total	p¥
NSND low	0§	2 (6.7%)¶		2 (6.7%)	1
NSND high	1 (3.3%) ¶	27 (90.0%)§		28 (93.3%)

¥McNemar’s test–each unit represents a pair of NSND and SD patients;

^§concordant pairs (high-high or low-low)

^¶discordant pairs (high-low or low-high)