Table 2.

Percent of Respondents Incorrectly Answering Each Knowledge Question (n = 470–527)

	There is nothing you can do to prevent HBP	P	Most of the time, people with HBP don't feel it	P	HBP is not life-threatening	P	Taking medications will cure HBP	P	BP is high when recorded as over 140/90	P	Americans eat more salt and sodium than they need	P
All ages	22.1		26.2		6.7		19.0		13.7		2.8
Age category (years)
<45	13.5	.005	39.2	.002	0	<.001	12.2	.008	14.9	.71	2.7	.028
45–65	19.2		27.8		4.5		16.1		12.5		1.1
>65	29.6		18.8		12.4		26.1		15.0		5.4
Sex
Male	19.2	.28	22.3	.16	4.8	.24	18.0	.67	12.0	.42	3.1	.67
Female	23.4		28.1		7.5		19.5		14.6		2.4
Race
African-American	31.8	<.001	28.2	.47	8.9	.16	14.7	.022	15.9	.32	5.3	.02
White	17.4		25.3		5.6		16.3		12.7		1.7
Education
<HS	33.3	.002	29.5	.025	12.9	.002	23.3	.011	19.1	.13	5.3	.16
HS graduate	20.6		31.8		4.1		23.7		13.1		2.3
Some college or more	16.7		20.3		4.2		13.0		11.5		1.8
Body mass index
<25 kg/m²	26.0	.44	31.5	.54	13.9	.022	17.8	.85	11.0	.56	4.1	.77
25–30 kg/m²	19.0		25.3		6.8		18.0		12.5		2.5
>30 kg/m²	22.8		25.4		4.8		19.8		15.1		2.7
Self-reported health
Excellent or very good	15.2	.06	17.0	.001	4.5	.42	17.1	.48	14.3	.67	2.7	.83
Good	21.4		22.9		8.2		17.6		12.1		3.4
Fair or poor	26.6		34.6		6.3		21.6		15.1		2.4
Current smoker
Yes	17.6	.22	36.1	.008	4.6	.38	17.4	.66	15.6	.53	1.8	.46
No	23.0		23.5		7.0		19.3		13.3		3.1
Known heart disease
Yes	23.8	.55	26.2	.96	8.0	.34	21.4	.39	14.3	.81	2.4	.69
No	21.2		26.0		5.6		17.9		13.4		3.1
Known diabetes
Yes	25.2	.25	26.2	.96	8.1	.32	20.7	.45	14.5	.80	4.4	.24
No	20.5		26.1		5.8		17.9		13.6		2.4
History of stroke/mini-stroke
Yes	36.7	.013	30.6	.50	10.2	.25	35.4	.004	16.3	.59	4.1	.63
No	21.1		26.1		5.9		18.0		13.5		2.8