Table 2.

Unstandardized regression coefficients,standard errors, and 95% confidence intervals (CI) for mediator models.

Mediator variable (M) =	Coping efficacy at 12 weeks				Anxious self-talk at 12 weeks
	Estimate	SE	P	95% CI	Estimate	SE	p	95% CI
Independent variable = Placebo vs. CBT, Dependent variable = PARS
Model without mediator
CBT → PARS (c)	−.44	.18	.02	[−.79, −.08]	−.44	.18	.02	[−.79, −.08]
R2Y	.21				.21
Model with mediator
CBT → M (a)	.36	.12	.003	[.13, .60]	.14	.10	.16	[−.06, .34]
M → PARS (b)	−.49	.16	.002	[−.81, −.17]	−.19	.14	.17	[−.45, .08]
CBT → PARS (c′)	−.26	.19	.16	[−.62, .10]	−.42	.16	.01	[−.74, −.09]
Indirect effect (a×b)	−.18	.08	.03	[−.34, −.02]	−.03	.03	.32	[−.08, .03]
R2y	.42				.24
Independent variable = Placebo vs. SRT, Dependent variable = PARS
Model without mediator
SRT → PARS (c)	−.49	.16	.002	[−.81, −.17]	−.49	.16	.002	[−.81, −.17]
R2Y	.25				.25
Model with mediator
SRT → M (a)	.39	.12	.001	[.16, .61]	.10	.11	.36	[−.11, .30]
M → PARS (b)	−.65	.14	.000	[−.92, −.38]	−.21	.14	.13	[−.48, .06]
SRT → PARS (c′)	−.24	.15	.12	[−.54, .06]	−.48	.17	.004	[−.81, −.15]
Indirect effect (a×b)	−.25	.09	.005	[−.43, −.08]	−.02	.03	.43	[−.07, .03]
R2y	.45				.29
Independent variable = Placebo vs. COMB, Dependent variable = PARS
Model without mediator
COMB → PARS (c)	−.81	.20	.000	[-1.20, −.42]	−.81	.20	.000	[−1.20, −.42]
R2y	.25				.25
Model with mediator
COMB → M (a)	.88	.13	.000	[.64, 1.13]	.09	.11	.39	[−.12, .30]
M → PARS (b)	−.37	.10	.000	[−.56, −.18]	−.13	.11	.26	[−.34, .09]
COMB → PARS (c′)	−.48	.20	.02	[−.87, −.09]	−.80	.17	.000	[−1.13, −.47]
Indirect effect (a×b)	−.33	.09	.000	[−.50, −.16]	−.01	.02	.51	[−.05, .02]
R2y	.35				.28

Note: Child gender and age were included as covariates in all models. COMB = combined treatment; SRT = sertraline; CBT = cognitive-behavioral therapy; PARS = Pediatric Anxiety Rating Scale; Baseline = Pretreatment; Week 12 = posttreatment; Week 24 = 3-month follow-up.