Table 1.

Maternal demographics, infant sex, and primary variable descriptives.

Variable	Mean (SD)/%
Maternal Age (Years)	M = 27.33 (SD = 4.33)
Maternal Education	0.8% Junior HS (7th–9th grade) 3.2% Partial HS (10th–12th grade) 14.4% HS degree or GED 35.2% Partial college 36.8% Standard college degree 9.6% Graduate degree
Maternal Employment	59.2% Employed
Household Annual Income	1.6% <USD 5000 2.4% USD 5000 to 9999 15.2% USD 10,000 to 19,999 19.2% USD 20,000 to 29,999 12.0% USD 30,000 to 39,999 9.6% USD 40,000 to 49,999 24.8% USD 50,000 to 74,999 7.2% USD 75,000 to 999,999 8.0% ≥ USD 100,000
Maternal Race	2.4% American Indian/Alaska Native 0.8% Asian 1.6% Native Hawaiian/Pacific Islander 1.6% Black/African American 92.8% White/Caucasian 0.8% Biracial
Maternal Ethnicity	13.6% Latina or Hispanic
Maternal Religion	3.1% Agnostic 2.1% Assembly of God 2.1% Atheist 2.1% Baptist 5.2% Catholic 2.1% Lutheran 1.0% Methodist 62.5% LDS 10.4% Non-Denominational 1.0% Pentecostal 1.0% Presbyterian 12.5% Other 9.4% Prefer not to say
Infant Sex	51% Male, 49% Female
Maternal Prenatal/Postnatal EPDS	5.00 (3.83)/4.81 (3.95)
Maternal Prenatal/Postnatal PASS	17.27 (11.50)/15.07 (10.55)
6-Month Breastfeeding Duration (Months)/Daily Frequency	4.52 (2.27)/4.67 (3.69)
10-Month Breastfeeding Duration (Months)/Daily Frequency	2.97 (2.75)/3.49 (3.37)
14-Month Breastfeeding Duration (Months)/Daily Frequency	7.26 (4.62)/1.61 (2.42)
18-Month Breastfeeding Duration (Months)/Daily Frequency	9.35 (5.07)/0.30 (0.90)

Note. All demographic data reported were attained at the prenatal session except maternal age and infant sex, which were collected at the 6-month postnatal session. Partial college was defined as attaining at least 1 year of college or other specialized or technical training. Maternal religious categories were not mutual exclusive, so participants were able to mark one or more categories to comprehensively describe their religious identities.