Table 2.

Multilevel linear mixed effects models demonstrating effects of service delivery model on caregiver distress

Independent Variables	PSI Beta (95% CI)	PHQ-9 Beta (95% CI)	CSQ Beta (95% CI)	FES Beta (95% CI)
Group
Augmented Primary Care	R e f	R e f	R e f	R e f
CATTS	3.53 [−.11, 7.18]	.64 [−.64, 1.91]	2.20 [−1.47, 5.87]	−.95 [−5.66, 3.77]
Week
0	R e f	R e f	R e f	R e f
4		−.92 [−1.62, −.21]*	−2.05 [−3.88, −.22]*	3.36 [.84, 5.89]**
1 0		−1.61 [−2.42, −.81]***	−6.54 [−8.59, −4.50]***	4.21 [1.33, 7.09]**
1 9		−1.86 [−2.65, −1.07]***	−7.50 [−9.58, −5.42]***	5.42 [2.35, 8.49]***
2 5	−.40 [−2.58, 1.78]	−1.53 [−2.45, −.61]***	−7.78 [−9.83, −5.73]***	5.13 [1.89, 8.37]**
Group X Week
Group x 4		.10 [−1.04, 1.25]	−.83 [−3.33, 1.66]	.15 [−3.17, 3.47]
Group x 10		−.13 [−1.42, 1.16]	−2.21 [−5.21, 0.79]	4.81 [0.91, 8.71]*
Group x 19		−1.12 [−2.36, −0.13]	−5.95 [−9.11, −2.78]***	8.82 [4.44, 13.21]***
Group x 25	−4.59 [−7.87, −1.31]**	−1.41 [−2.74, −0.08]*	−5.41 [−8.58, −2.24]***	6.69 [2.32, 11.06]**
Child Comorbidity
ADHD only	R e f	R e f	R e f	R e f
ADHD+ODD or GAD	5.00 [0.92, 9.09]*	.66 [−0.42, 1.74]	5.33 [1.73, 8.92]**	−6.34 [−11.70, −0.97]*
ADHD+ODD+GAD	6.66 [1.77, 11.54]**	2.66 [1.37, 3.95]***	10.13 5.87, 14.39]***	−6.99 [−12.69, −1.28]*

^*p <.05;

^**p <.01;

^***p<.001

PSI: Parent Stress Inventory; PHQ-9: Patient Health Questionnaire-9 Item; CSQ: Caregiver Strain Questionnaire; FES: Family Empowerment Scale; CATTS: Children’s ADHD Telemental Health Treatment Study