. Author manuscript; available in PMC: 2016 May 1.

Published in final edited form as: J Consult Clin Psychol. 2016 Feb 15;84(5):453–464. doi: 10.1037/ccp0000081

Table 4.

Multilevel Models of Alliance Between Groups

	Coefficient	S.E.	ES	Deviance¹	N Parameters in Model	AIC
TPOCS-A analyses

Linear Model				803.00	7	820.00
Intercept (first session value), γ₀₀₀	3.29^***	.055	N/A
Slope (change over time in weeks), γ₁₀₀	−.0054^*	.0020	N/A
Models including group contrasts¹				771.42	13	797.42
Group Differences in Intercept
ICBT (1) vs YAS-UC (0)	.57^***	.09	1.18
YAS-ICBT (1) vs YAS-UC (0)	.34^**	.11	.70
ICBT (1) vs YAS-ICBT (0)	.22^*	.10	.45
Group Differences in Slope
ICBT (1) vs YAS-UC (0)	−.0077	.0051	−.37
YAS-ICBT (1) vs YAS-UC (0)	−.011^*	.0053	−.52
ICBT (1) vs YAS-ICBT (0)	−.0031	.0050	−.15

TASC analyses

Unconditional Model
Intercept (post-treatment value), γ₀₀	20.23^***	.70	N/A
Models including group contrasts¹
Group Differences in Intercept
ICBT (1) vs YAS-UC (0)	3.39^**	1.13	.83
YAS-ICBT (1) vs YAS-UC (0)	−1.62	1.44	−.40
ICBT (1) vs YAS-ICBT (0)	5.01^***	1.19	1.22

Note. For parsimony, this table includes only parameters of central conceptual interest (e.g., intercepts are not reported for the models examining group differences, parameters are not reported for the control variable, number of sessions).

Analyses of the TASC were completed using multiple imputation. Deviance statistics are not available in the HLM software for the aggregated models from such analyses.

S.E. = Standard Error; ES = effect sizes (Cohen’s d)

p < .05

^**

p < .01

^***

p < .001

ICBT = individual cognitive-behavioral therapy delivered in Kendall et al. study; YAS-ICBT = ICBT delivered in YAS; YAS-UC = usual care delivered in YAS; TPOCS-A = Therapy Process Observational Coding System for Child Psychotherapy – Alliance scale; TASC = Therapeutic Alliance Scale for Children.