TABLE 2.
Summary of secondary outcome measures: attachment measures at age 12 months and neural correlates of social development at age 6 months by group
| CAU | Intervention | |
|---|---|---|
| Age 12‐month assessment of mother‐infant attachment | ||
| Sample size for analysis (% female infants) | 28 (39.3%) | 28 (53.6%) |
| Maternal age (years; mean, SD) | 18.81 (1.54) | 18.65 (1.56) |
| Infant age (weeks; mean, SD) | 56.74 (4.67) | 57.69 (6.05) |
| EAS Direct scores (mean, SD, 95% CI): | ||
| EAS Maternal sensitivity | 4.61 (1.50) (4.03‐5.19) | 4.86 (1.48) (4.28‐5.43) |
| EAS Maternal Structuring | 3.79 (1.51) (3.20‐4.37) | 3.95 (1.44) (3.39‐4.50) |
| EAS Maternal Non‐Intrusiveness | 5.14 (1.30) (4.64‐5.65) | 5.16 (1.63) (4.52‐5.80) |
| EAS Maternal Non‐Hostility | 5.50 (1.30) (5.00‐6.00) | 5.54 (1.50) (4.96‐6.12) |
| EAS Child Responsiveness | 4.75 (1.24) (4.27‐5.23) | 5.31 (1.43) (4.75‐5.86) |
| EAS Child Involvement | 3.66 (1.52) (3.07‐4.25) | 4.55 (1.46) (3.99‐5.12) |
| EAS Maternal Emotional Attachment Zone (N, %): | ||
| Emotionally available | 11 (39.3%) | 13 (46.4%) |
| Complicated | 10 (35.7%) | 9 (32.1%) |
| Detached | 7 (25.0%) | 5 (17.9%) |
| Problematic/disturbed | 0 | 1 (3.6%) |
| EAS Infant Emotional Attachment Zone (N, %): | ||
| Emotionally available | 10 (35.7%) | 18 (64.3%) |
| Complicated | 12 (42.8%) | 5 (17.9%) |
| Detached | 6 (21.4%) | 5 (17.9%) |
| Problematic/disturbed | 0 | 0 |
| Age 6‐month assessment of neural correlates of infant social development | ||
| Sample size for analysis (% female infants) | 13 (46.2%) | 15 (53.3%) |
| Infant age (weeks; mean, SD) | 26.62 (1.26) | 27.07 (1.17) |
| No. of clean EEG trials in analysis (mean, SD, min‐max): | ||
| Mother condition | 41.08 (17.25, 15–65) | 39.20 (14.76, 15–63) |
| Stranger condition | 41.23 (17.16, 15–66) | 40.47 (16.10, 16–66) |
| Mean Nc amplitude (μv) (mean, SD): | ||
| Mother condition – frontal scalp | −3.54 (4.33) | −0.05 (5.22) |
| Stranger condition – frontal scalp | −2.46 (4.71) | −1.69 (4.06) |
| Mother condition – central scalp | −5.53 (3.06) | −5.84 (5.26) |
| Stranger condition – central scalp | −6.36 (6.04) | −5.36 (3.32) |
EAS, Emotional Availability Scale; Mean Nc amplitude, the mean amplitude measured in the time‐range of the Nc (400‐600 ms); μv, amplitude measured in microvolts.