Table 1.

Demographic information for the sample.

	N (%)	Mean ± SD	Range
Postpartum months at time of scan		3.96 ± 1.58	0.89 - 6.96
Maternal age (years)		24.41 ± 5.21	18 - 36
Maternal race/ethnicity
Caucasian	19 (48.7)
Hispanic	12 (30.7)
African-American	2 (5.1)
Other	6 (15.3)
Infant sex (female)	23 (58.9)
Income-to-needs ratio		2.46 ± 1.48	0.44 - 6.34
Depressive mood (BDI)		6.97 ± 5.63	0 - 26
Parental self-efficacy (MSES)		34.87 ± 3.09	27 - 40
Mood disorder history (Yes)	4 (10.2)
Current intake of antidepressant or psychoactive medications	2 (0.5)
Breastfeeding (and/or daily pump; but not exclusive formula feeding)	38 (97.4)
Right handedness*	33 (84.6)
Time away from own infant per week (hours)		11.63 ± 13.27	0-40
Maternal working status (working full- or part-time)	11 (28.2)
Interval between home and MRI visit (months)		0.85 ± 0.68	0.07 - 3.42

^*one participant’s handedness data was missing.