Most caregivers in ABC-Infant studies were female (89 to 97 percent); 2 to 10 percent were male (three studies). Thirty-nine to 51 percent of children were female and 49 to 62 percent were male (four studies).
At enrollment, caregivers were on average 25 to 40 years old (four studies). In two of these studies, caregivers ranged from about 16 to 47 years old. Children’s average age at enrollment ranged from 10 to 22 months old (four studies). Two of these studies reported that children’s age at enrollment ranged from about 2 to 27 months. Another study reported that children’s average age at completion of ABC-Infant was 27 months.
Programs served racially and ethnically diverse families (four studies).* The percentage of caregivers who were White ranged from 10 to 98 percent (three studies). One to 61 percent of caregivers were Black (two studies), 9 to 50 percent were biracial (two studies), 16 percent were Native Hawaiian or other Pacific Islander (one study), 5 to 15 percent were Latinx/Hispanic (two studies), and 2 to 9 percent were Asian American (two studies).
Among children, 4 to 68 percent were Asian American (two studies), 10 to 61 percent were Black (three studies), 8 to 39 percent were White (three studies), 5 to 20 percent were biracial (three studies), 11 percent were Latinx/Hispanic (one study), and 2 to 8 percent were another race (three studies).
The percentage of caregivers who did not complete high school ranged from 0 to 68 percent (three studies). In two of these studies, 15 percent finished some college, 8 to 37 percent completed college or technical school, and in one study 48 percent of caregivers attended graduate school. Programs supported families with caregivers who were single, divorced or separated, married, or living with a partner (three studies). In two of these studies, 7 to 94 percent of caregivers were single and 6 to 93 percent were married or living with a partner. One of these studies reported that 10 percent of caregivers were separated or divorced. The third study reported that 49 percent of caregivers were living in two-adult households, 27 percent were single, and 23 percent were living in households with at least three adults.
In one study, all caregivers were involved with the child welfare system.
Two studies included families with adopted children. In one study, all children were adopted internationally. Sixty-three percent of the children were adopted from Asia, 17 percent from Eastern Europe, 13 percent from Africa, and 8 percent from Central America (percentages do not add up to 100 percent because of rounding). In another study, 58 percent of children were internationally adopted, 26 percent were domestically adopted, and 16 percent were in foster care.
*The count of studies for each racial and ethnic category comprises studies that included sample members from the racial or ethnic category. If the study did not include sample members from a particular category, the study is not included in the count.