Table 4.

Coefficients of the hierarchical stepwise regression analysis (N=141).

Model 1 and stepa		Unstandardized coefficient B (SE)	Standardized beta (β)	P value	95% CI
Step 1
	(Constant)	2.78 (0.12)	—b	<.001	2.55, 3.01
	Use of mHealthc apps (yes)	0.66 (0.17)	0.32	<.001	0.34, 0.99
Step 2
	(Constant)	2.13 (0.28)	—	<.001	1.57, 2.69
	Use of mHealth apps (yes)	0.59 (0.16)	0.29	<.001	0.26, 0.91
	Stress symptoms	0.35 (0.14)	0.20	.01	0.07, 0.62
Step 3
	(Constant)	−0.10 (0.26)	—	.72	−0.61, 0.42
	Use of mHealth apps (yes)	0.10 (0.12)	0.05	.42	−0.14, 0.33
	Stress symptoms	0.18 (0.10)	0.10	.06	−0.01, 0.37
	Attitude toward mHealth	0.84 (0.07)	0.73	<.001	0.71, 0.97
Step 4
	(Constant)	0.52 (0.36)	—	.14	−0.18, 1.22
	Use of mHealth apps (yes)	0.07 (0.12)	0.04	.54	−0.16, 0.30
	Stress symptoms	0.21 (0.09)	0.12	.03	0.03, 0.40
	Attitude toward mHealth	0.78 (0.07)	0.69	<.001	0.65, 0.92
	Skepticism/perceived risks	−0.17 (0.07)	-0.14	.01	−0.31, −0.04

^aDependent variable: acceptance of mHealth (behavioral use intention). Model 1 refers to the main model according to the statistical plan in distinction to post hoc analyses. (Models 2 and 3 as presented in Multimedia Appendix 1).

^bNot applicable.

^cmHealth: mobile health.