Table 3.

Mediation of service delivery effects on 25-wk caregiver outcomes by improvement in child symptoms and performance from baseline to 19-wks

	Parenting Stress (PSI)	Caregiver Depression (PHQ-9)	Caregiver Strain (CSQ)	Family Empowerment (FES)
Direct effect of CATTS service delivery model on 25-week caregiver outcomes	−2.23 [−5.59, 1.03]	−.40 [−1.50, .82]	−2.54 [−5.12, .32]	4.88 [.13, 10.13]*
Indirect (mediation) effect via improvements in child inattention symptoms	−1.44 [−3.62, .09]	.05 [−.42, .63]	−.99 [−2.37, .17]	1.46 [−.76, 4.33]
Indirect effect via improvements in child hyperactivity symptoms	.08 [−1.13, 1.59]	−.17 [−.62, .15]	.65 [−.14, 1.98]	.24 [−1.61, 2.16]
Indirect effect via improvements in child oppositional/defiant symptoms	−.28 [−1.79, .83]	−.34 [−.93, .03]	−1.50 [−3.17, −.48]*	−.33 [−2.38, 1.31]
Indirect effect via improvements in child role performance	.11 [−.19, 1.04]	.10 [−.03, .46]	−.06 [−.74, .28]	.31 [−.28, 1.64]
Total indirect effect of improvement in combined inattention, hyperactivity, and oppositional/defiant symptoms and role performance	−1.54 [−3.04, −.32]*	−.37 [−.85, .06]	−1.91 [−3.60, −.67]*	1.68 [−.25, 3.73]
Total effect	−3.76 [−7.10, −.62]*	−.77 [−1.91, .44]	−4.44 [−7.33, −1.54]*	6.56 [2.20, 10.86]*
Percentage of CATTS effect on caregiver outcomes attributable to change in child symptoms/Role performance	41% [5%, 100%]*	48% [−41%, 100%]	43% [15%, 100%]*	26% [−4%, 96%]

^*95% bias-corrected bootstrap CI does not contain zero.

Mediation models are adjusted for baseline score of relevant caregiver outcome scale. PSI: Parent Stress Inventory; PHQ-9; Patient Health Questionnaire 9 Item; CSQ: Caregiver Strain Questionnaire; FES: Family Empowerment Scale