Subscale | BD sample n = 26 | Non-clinical sample n = 28 | Mean difference | Significance level | Cohen’s d |
---|---|---|---|---|---|
Mean (sd) 95% CI | Mean (sd) 95% CI | 95% CI | |||
S1 | |||||
Maternal positive affective involvement and verbalisationa | 3.4 (0.57) 3.1–3.6 | 4.1 (0.51) 3.9–4.3 | − 0.74 (− 1.03 to − 0.44) | < 0.001* | 1.36 |
S2 | |||||
Maternal negative affect and behavioura | 4.4 (0.54) 4.2–4.6 | 4.9 (0.22) 4.8–5.0 | − 0.49 (− 0.71 to − 0.27) | < 0.001* | 1.19 |
S3 | |||||
Maternal intrusiveness, insensitivity and inconsistencya | 3.8 (0.49) 3.6–4.0 | 4.5 (0.37) 4.4–4.6 | − 0.68 (− 0.92 to − 0.45) | < 0.001* | 1.57 |
S4 | |||||
Infant positive affect, communicative and social skillsa | 3.3 (0.68) 3.0–3.6 | 3.9 (0.61) 3.7–4.2 | − 0.63 (− 0.98 to − 0.28) | 0.001* | 0.97 |
S5 | |||||
Infant quality of play, interest and attentional skillsa | 4.0 (0.40) 3.8–4.1 | 4.4 (0.37) 4.3–4.6 | − 0.43 (− 0.64 to − 0.22) | < 0.001* | 1.12 |
S6 | |||||
Infant dysregulation and irritabilityb | 4.7 (4.5, 4.8) 4.6–4.8 | 4.9 (4.7, 5.0) 4.6–4.9 | * | 0.04* | 0.28c |
S7 | |||||
Dyadic mutuality and reciprocitya | 2.7 (0.74) 2.4–3.0 | 3.7 (0.76) 3.4–4.0 | − 1.03 (− 1.44 to − 0.63) | < 0.001* | 1.38 |
S8 | |||||
Dyadic disorganisation and tensiona | 3.6 (0.57) 3.4–3.9 | 4.5 (0.41) 4.4–4.7 | − 0.88 (− 1.14 to − 0.61) | < 0.001* | 1.78 |