Table 1.

Characteristics of cohorts of cancer patients, benign patients and normal controls. *Data are presented as median age at diagnosed.

	Lung			Colorectal			Breast			Prostate
	Cancer (n=55)	Benign (n=35)	Normal (n=53)	Cancer (n=31)	Benign (n=33)	Normal (n=52)	Cancer (n=53)	Benign (n=40)	Normal (n= 49)	Cancer (n=65)	Benign (n=51)	Normal (n=74)
Sex
Male	31	19	24	17	17	30				65	51	74
Female	24	16	29	14	16	22	53	40	49
Race
Caucasian	53	34	50	20	24	34	50	40	42	35	26	43
Noncaucasian	2	1	3	11	9	18	3		7	30	25	31
Age*, yr
Median	67.42	59.74	60.06	63.71	59.62	59.06	53.04	47.27	60.78	62.01	65.22	62.14
Range	48-88	20-80	49-82	35-79	47-80	48-77	33-84	22-83	48-84	45-79	50-79	50-74
Tumor stage
Stage 1	43			26			19			37
Stage 2	12			5			34			28