Table 3. Effects of participating in PCIT versus TAU on child outcomes as an overall change from 0 to 18 months (growth curve analyses) and the prediction of outcomes at the 6- and 18-month assessments (linear regression).

	B [95% CI]	β	p-value	Cohen’s d
Overall change from 0 to 18 months
ECBI Intensity—Mother	-10.12 [-22.13; 1.40]	-.31	.043	.64
ECBI Intensity—Father	-8.55 [-19.83; 2.26]	-.37	.062	.79
CBCL Externalizing—Mother	-3.08 [-6.48; 0.64]	-.29	.044	.61
CBCL Externalizing—Father	-1.63 [-5.42; 2.00]	-.22	.19	.44
Parental Do Skills	7.49 [5.02; 9.98]	.79	< .001	2.58
Parental Don’t Skills	-4.42 [-7.15; -1.67]	-.59	.001	1.46
Child Non-Compliance	-.79 [-2.62; 1.05]	-.25	.20	.52
Change from 0 to 6 months
ECBI Intensity—Mother	10.87 [-3.77; 25.01]	.18	.11	.37
ECBI Intensity—Father	12.06 [.08; 26.75]	.27	.03	.56
CBCL Externalizing—Mother	4.29 [-.58; 10.06]	.19	.06	.39
CBCL Externalizing—Father	3.00 [-.98; 7.41]	.18	.095	.37
Parental Do Skills	-11.24 [-7.23; -15.58]	-.67	< .001	1.81
Parental Don’t Skills	9.61 [4.93; 14.04]	.58	< .001	1.42
Child Non-Compliance	.42 [-2.46; .98]	.09	.27	.18
Change from 6 to 18 months
ECBI Intensity—Mother	17.00 [.15; 41.14]	.25	.02	.52
ECBI Intensity—Father	11.97 [.89; 25.89]	.19	.02	.39
CBCL Externalizing—Mother	5.46 [.98; 10.30]	.21	.01	.43
CBCL Externalizing—Father	3.38 [-2.12; 8.41]	.16	.11	.32
Parental Do Skills	-10.65 [-6.78; -13.99]	-.69	< .001	1.91
Parental Don’t Skills	5.64 [2.34; 9.68]	.39	< .001	.85
Child Non-Compliance	1.16 [-1.30; 3.99]	.11	.21	.22

Notes: PCIT = Parent-Child Interaction Therapy, TAU = treatment as usual; ECBI = Eyberg Child Behavior Inventory, CBCL = Child Behavior Checklist, CI = confidence interval. Intercepts are adjusted for in the growth curve analyses and initial values in the regression analyses.