Table 4.

Distribution of apps across methodological variables.

Variable		n (%)
Study type
	Interventional	68 (95.8)
	Observational	3 (4.2)
Pretest data collected
	Yes	46 (67.6)
	No	22 (32.4)
Control treatment
	Standard care	30 (50.8)
	Active	26 (44.1)
	Waitlist	3 (5.1)
Masking
	Open	47 (69.1)
	Single-blind	17 (25.0)
	Double-blind	4 (5.9)
Randomization
	Yes	57 (83.8)
	No	11 (16.2)
Qualitative component
	Yes	17 (23.9)
	No	54 (76.1)
Study location
	Onsite	69 (97.2)
	Online	2 (2.8)
Data collection points
	One	12 (17.6)
	Two	20 (29.4)
	Three	17 (25.0)
	Four or more	12 (17.6)
	Continuous	7 (10.3)