Table I. Characteristics of study participants in the discovery phase.

Variable	GC count (n = 37)			Healthy count (n = 50)			pa
	No.	Mean	%	No.	Mean	%
Age, years							0.40
Mean		63.2			65.3
S.D.		13.3			11.8
Sex							0.013
Male	26		70	21		42
Female	11		30	29		58
TNM stage
I	12		32
II	8		22
III	8		22
IV	9		24

^a Fisher's test.