Table 1. Patients’ demographics by race/ethnicity.

Characteristics	C			AA		P value
	N=1,236	Percent (%)		N=152	Percent (%)
Age						0.47
<50	34	3		8	5
50 to 54	109	9		19	13
55 to 59	260	21		28	18
60 to 64	276	22		32	21
65 to 69	163	13		20	13
70 to 75	195	16		23	15
Over 75	199	16		22	14
Mean age (SD)	64.9	9.4		63.8	9.9	0.17
Gender						0.17
Male	1,185	96		142	93
Female	51	4		10	7
BMI						0.41
<30	721	58		94	62
≥30	515	42		58	38
Preparation*						0.51
Good	941	76		112	74
Fair	295	24		40	26

*, patients with poor bowel preparation were excluded. C, Caucasians; AA, African Americans.