Table 1.

Sample Demographics (n = 382)

	%	n
Infant Characteristics
Sex assigned at birth
Female	44.5	170
Male	55.5	212
Race
African American	62.83	240
Asian	1.31	5
Pacific Islander	0.26	1
White	33.51	128
Othera	1.05	8
Ethnicity
Hispanic or Latina/o	2.62	10
Not Hispanic or Latina/o	96.86	370
Unspecified	0.52	2
Maternal Background
Educationb
Less than High school	7.33	28
High school graduate	54.45	208
College graduate	10.47	40
Post-graduate degree	21.99	84
Unspecified	5.76	22
Race
African American	63.09	241
Asian	1.31	5
Pacific Islander	0	0
White	33.25	127
Other (Not defined)	2.36	9
Ethnicity
Hispanic or Latina	2.62	10
Not Hispanic or Latina	96.86	370
Unspecified	0.52	2
	Mean	SD	Range
Infant Characteristics
1yo. ITSEA Domain Scores
Externalizing T-scores (n=274)	52.7	11.4	32–96
Internalizing T-scores (n=280)	47.5	10.8	26–80
2yo. ITSEA Subdomain Scores
Externalizing T-scores (n=257)	54.0	10.4	33–99
Internalizing T-scores (n=258)	47.9	10.7	27–77
Maternal Background
Age at delivery, years	29.1	5.3	18–41

Note: ITSEA = Infant and Toddler Socioemotional Assessment

^aTwo children were Non-Hispanic White and African American. Two children were Non-Hispanic White and Asian. Four participants were missing data.

^bMaternal education category represents the highest level of education that a mother achieved from birth to age 2 years.