Rethinking sources of representative controls for the conduct of case–control studies in minority populations

Table 3 Distribution of selected characteristics for RDD, community controls, all controls, and census estimates

	RDD controls (%)	Community controls (%)	All controls (%)	ACS* (%)
Education
Less than 12^th grade	8.2	17.3	13.9	14.6
High school	27.1	27.7	27.4	31.8
Some college	26.1	28.2	27.4	31.2
College graduate	25.6	16.4	19.9	22.4^†
Post-graduate degree	13	10.4	11.4	22.4^†
Annual income
Less than $15,000	12.9	26.5	21.5	18.1
$15,000-19,999	7.2	7.4	7.4	5.4
$20,000-24,999	4.6	7.7	6.6	5.1
$25,000-34,999	9.8	9.2	9.4	10.9
$35,000-49,999	18.6	13.7	15.5	13.2
Marital status
Married	46.8	29.9	36.2	26.8
Widowed	3.9	8.5	6.8	9.3
Separated	5.4	5	5.2	4.3
Divorced	13.3	13.5	13.4	10.8
Single	30.5	43	38.4	48.8

*2009-2011 American Community Survey 3-year estimates for New Jersey African American Female; US Census Bureau. ^†percentage represents both college graduate and post-graduate degree