Table 4.

Results from meta-regression with adherence as an effect size measure.

Independent variables	Beta coefficient	SE	P value
Patient portal technology (yes=1, no=0)	1.37	0.73	.07
Mobile app technology (yes=1, no=0)	1.75	0.75	.13
Exclusive tool (yes=1, no=1)	.51	0.44	.25
Multimodal content (yes=1, no=0)	2.49a	0.72	.00
Training for using eHealth tool (yes=1, no=0)	−.51	0.56	.38
Interaction with health providers (yes=1, no=0)	1.23a	0.55	.03
Quality score of included study (minimum=0, maximum=31)	.49	0.78	.53
Constant	−3.72b	1.86	.06
Adjusted R2	38.80	—c	—
Τ2	1.086	—	—
I2	99.84	—	—

^aP≤.05.

^bP≤.10.

^cNot applicable.