Table 1.
Characteristics of the participants.
| N (%) | Mean ± SD | Range | |
|---|---|---|---|
| Maternal age (years) at the time of fMRI scans Maternal race/ethnicity | – | 26.11 ± 5.62 | 18–37 |
| Caucasian | 22 (41.5) | – | – |
| Hispanic | 23 (43.4) | – | – |
| African-American | 4 (7.5) | – | – |
| Others | 4 (7.6) | – | – |
| Maternal education (years) | – | 14.15 ± 2.43 | 9–20 |
| Infant sex (female) | 31 (58.5) | – | – |
| Postpartum month at the time of fMRI scans | – | 4.47 ± 2.12 | 0.89–10.66 |
| Maternal sensitivity | – | 5.34 ± 1.24 | 3–7 |
| Depressive symptoms (BDI) | – | 7.45 ± 5.12 | 0–22 |
| Trait anxiety symptoms (STAI-Trait) | – | 36.26 ± 9.81 | 20–60 |
| State anxiety symptoms (STAI-State) | – | 31.57 ± 6.74 | 20–47 |
| History of depression or anxiety diagnosis (Yes) | 21 (39.6) | – | – |
| Anxiety and depression medication use (Yes) | 4 (7.5) | – | – |
| Interval between home and fMRI visits (months) | – | 1.04 ± 1.07 | 0.07–6.25 |
| Breastfeeding | 35 (66.0) | ||
| Right handedness | 48 (90.6) | – | – |
| Relationship status (married/engaged/common law marriage) | 34 (64.2) | ||
| Time away from own infant per week (hours) | – | 13.23 ± 15.31 | 0–50 |