Table 1.

Participant Characteristics, Overall and by African American (AA) vs. White Presented as Percents^*

Participant Characteristic	% Overall (n = 801)	% AA (n = 153)	%White (n = 648)	p value†
Case status in NCCCS
Case	45	55	43	0.008
Control	55	45	57
Age
40 to 54 years	20	21	20	0.662
55 to 69 years	42	44	42
70 to 85 years	38	35	38
Gender
Male	57	49	59	0.026
Female	43	51	41
Education
Less than high school	15	31	11	<0.001
High school graduate	25	28	24
Technical or some college	32	26	33
College degree, graduate school	28	15	32
Income
Less than $20,000	21	48	15	<0.001
$20,000 to $40,000	27	26	26
More than $40,000	52	26	59
How religious
Not religious	5	4	5	0.001
Somewhat religious	42	32	44
Very religious	53	64	51
Perceived health status
Excellent	13	13	13	0.113
Very good	37	30	39
Good	30	32	29
Fair	14	20	13
Poor	6	5	6
Cancer Hx
Case, family hx (relative)	6	8	6	0.027
Case, no family hx (relative)	39	47	37
Control, family hx (self or relative)	18	11	20
Control, no family hx (self or relative)	37	34	37
How much heard about genetic research and race
A lot	18	29	16	0.001
Little	71	59	73
None	11	12	11
How positive about genetic research about racial differences
Very positive	54	43	56	<0.001
Positive	37	41	37
Neutral or negative	9	16	7
How likely to take part in genetic research about racial differences
Very likely	45	44	45	0.284
Somewhat likely	41	38	42
Neutral or unlikely	14	18	13

*Percents are column percents, e.g., 55% of African Americans are cases and 43% of whites are cases

^†p value for chi-square test comparing each characteristic to African Americans vs. whites