Table 1.

Study Population Characteristics by Race/Ethnicity (N=1281)

Characteristic	Whites N=383	Blacks N=368	Hispanic/English N=206	Hispanic/Spanish N=324
Age, mean years (SD)	54.4 (5.9)	52.2^‡ (5.3)	51.2^‡ (5.1)	53.2^* (5.3)
Female, %(^‡)	53.8	48.9	58.3	66.4
Education, mean years (SD)	14.6 (3.0)	12.9^‡ (2.2)	13.5^‡ (3.0)	9.3^‡ (4.0)
Education Level, %(^‡)
Less than 9 years	1.6	2.2	5.3	43.5
9–11 years	8.9	17.4	10.2	16.7
High school graduate	21.7	34.5	26.2	21.2
Some college	21.4	32.1	28.2	12.7
College graduate or more	46.5	13.9	30.1	5.3
Household Income level, %(^‡)
<$10,000	26.1	45.9	13.6	35.5
$10,000–20,000	14.1	19.0	12.1	33.3
$20,000–50,000	19.3	21.2	23.3	27.2
$50,000 and more	40.5	13.9	51.0	4.0
Has health insurance, %(^‡)	71.3	60.1	87.9	63.9
Self-reported Chronic Condition Count, mean (SD)	1.2 (1.2)	1.3 (1.2)	1.0 (1.0)	1.5^† (1.2)
Smoking Status, %(^‡)
Current	32.6	53.0	19.4	21.7
Past	29.5	24.2	40.3	31.1
Never Smoked	37.9	22.8	40.3	47.3
BMI, %(^‡)
<25.0 kg/m²	40.5	35.9	18.5	17.6
25.0–29.9 kg/m²	38.1	34.2	45.2	41.4
30–34.9 kg/m²	21.4	29.9	36.4	41.2
SF-36v2 Physical Component Summary Score (PCS), mean (SD)	48.9 (9.7)	49.7 (8.8)	51.3 (8.5)	48.1 (9.4)
SF-36v2 Mental Component Summary Score (MCS), mean (SD)	50.2 (11.1)	49.7 (11.8)	50.2 (11.8)	44.0 (14.7)
Self Reported Overall Health, distribution(^‡)
Excellent	13.8	6.8	9.7	10.8
Very Good	37.3	26.4	31.1	11.1
Good	31.3	44.6	38.8	38.6
Fair	14.1	19.6	18.0	33.6
Poor	3.4	2.7	2.4	5.9

Notes: SD=standard deviation. Significance tests for categorical variables are based on the Pearson χ² statistic and tests for continuous variables are based on the F statistic for overall significance and the Bonferroni-adjusted statistic for comparisons across the groups compared to whites. For categorical/nominal variables statistical significance is across all values of the variables. For continuous variables statistical significance comparisons are relative to whites.

p<0.05

^†

p<0.01

^‡

p<0.001