Table 3.

Change in primary and secondary outcomes across iCBT

	Pre M (SD)	Post M (SD)	d	Percent change	p
PARS-A
Full sample	14.6 (3.4)	8.9 (7.4)	1.08	39.0%	.029
iCBT-Email	16.3 (3.8)	12.7 (10.4)	.522	22.1%	.461
ICBT-Video	13.3 (2.8)	6.0 (3.6)	1.84	54.9%	.035
RCADS Parent-Report: Anxiety
Full sample	39.4 (14.8)	25.6 (18.4)	1.09	35.0%	.028
iCBT-Email	46.3 (14.6)	41.3 (17.6)	.945	10.8%	.243
ICBT-Video	34.3 (14.6)	13.8 (6.1)	1.59	59.8%	.050
RCADS Child-Report: Anxiety
Full sample	40.0 (23.1)	30.0 (22.0)	1.27	25.0%	.015
iCBT-Email	56.7 (17.6)	48.3 (18.5)	1.76	14.8%	.093
ICBT-Video	27.5 (19.2)	16.3 (12.5)	1.10	40.7%	.115
RCADS Parent-Report: OCD
Full sample	4.0 (2.6)	1.4 (2.1)	1.24	65.0%	.017
iCBT-Email	4.7 (3.1)	3.0 (2.6)	2.89	36.2%	.038
ICBT-Video	3.5 (2.5)	.25 (.5)	1.24	92.9%	.090
RCADS Child-Report: OCD
Full sample	4.9 (4.1)	4.4 (3.0)	0.20	10.2%	.62
iCBT-Email	8.7 (3.1)	7.3 (1.2)	0.44	16.1%	.53
ICBT-Video	2.0 (1.6)	2.3 (1.7)	−0.19	−15.0%	.72
SDS-Parent
Full sample	22.9 (11.5)	15.7 (9.4)	0.57	31.4%	.18
iCBT-Email	21.3 (11.0)	18.0 (14.7)	.39	15.5%	.57
ICBT-Video	24.0 (13.4)	14.0 (5.0)	.64	41.7%	.29
SDS-Child
Full sample	11.9 (7.0)	13.1 (7.6)	−.16	−10.1%	.69
iCBT-Email	14.0 (5.2)	12.7 (6.7)	.13	9.3%	.85
ICBT-Video	10.3 (8.5)	13.5 (9.3)	−.50	−31.1%	.39
SRS-2-Social Communication
Full sample	90.9 (22.6)	71.3 (12.1)	−.080	21.6%	.076
iCBT-Email	84.3 (10.3)	81.3 (6.7)	.29	3.6%	.67
ICBT-Video	95.9 (29.6)	63.8 (9.2)	1.29	33.5%	.082
SRS-2-Restricted Interests and Repetitive Behaviors
Full sample	20.6 (4.9)	16.0 (4.9)	−.077	22.3%	.075
iCBT-Email	16.3 (4.0)	15.3 (4.5)	1.00	6.1%	.225
ICBT-Video	23.8 (2.2)	16.5 (5.7)	1.14	30.7%	.106

Note: iCBT = Internet-delivered cognitive behavioral therapy; OCD = obsessive-compulsive disorder; PARS-A = Pediatric Anxiety Rating Scale modified for Autism; SDS = Sheehan

Disability Scale; SRS-2 = Social Responsiveness Scale-Second Edition; RCADS = Revised Children’s Anxiety and Depression Scale