Table 2.

Multilevel models estimating changes over time in the primary outcome measure, QIDS-A17-SR^a.

Model estimates		Estimate	95% CI	P value
Baseline score
	Intercept	15.62	14.57 to 16.68	<.001
	IPDTb	–0.32	–1.76 to 1.13	.67
Rate of change
	Slope	–0.73	–1.01 to –0.46	<.001
	Time × time	0.05	0.02 to 0.07	<.001
	IPDT versus control	–0.29	–0.51 to –0.07	.01
Variance components
	Residual variance	6.10	5.40 to 6.89	<.001
	Intercept	7.61	5.04 to 11.50	<.001
	Slope	0.13	0.08 to 0.23	<.001
	Correlation	–0.05	–0.29 to 0.38	.78
Between-group effect size (Cohen d)		0.82	0.35 to 1.29

^aQIDS-A17-SR: Quick Inventory of Depressive Symptomatology for Adolescents.

^bIPDT: internet-based psychodynamic therapy.