Table 2.

Summary of priors in the model: outcome and predictor variables, distribution types, hyperparameters, and sources.

Outcome	Predictor	Distribution	Hyperparameters, mean (SD)	Prior source
Use2 weeks	Sexfemale	Normal	0.21 (1.23)	Abdool et al [27], Coughlin et al [28], and Kontos et al [29]
Use2 weeks	Educationlow	Normal	−0.34 (1.09)	Abdool et al [27], Børøsund et al [30], Coughlin et al [28], Golsteijn et al [31], and Kontos et al [29]
Use2 weeks	BDI-IIa	Normal	0 (10)	Diffuse priorb
Use2 weeks	DASS-21c	Normal	0 (10)	Diffuse prior
PEOUd4 weeks	Use2 weeks	Normal	0.22 (1.12)	Abdool et al [27]
PEOU12 weeks	PEOU4 weeks	Normal	0.61 (0.46)	No previous research was identified. The prior for the correlation coefficient (r=0.6) was set based on the expert assessment of the authors.
PUe12 weeks	PEOU12 weeks	Normal	0.71 (0.18)	Abdool et al [27], Almazroi et al [32], and Dünnebeil et al [33]
Use12 weeks	PEOU12 weeks	Normal	1.42 (2.95)	Abdool et al [27]
Use12 weeks	PU12 weeks	Normal	1.02 (2.19)	Abdool et al [27]
Use12 weeks	Use2 weeks	Normal	1.36 (3.40)	Authors’ assessment (r=0.2)

^aBDI-II: Beck Depression Inventory–II.

^bDiffuse prior: noninformative prior distributions that assign broad probabilities across a wide range of parameter values, reflecting minimal prior beliefs or knowledge.

^cDASS-21: Depression, Anxiety, and Stress Scale–21.

^dPEOU: perceived ease of use.

^ePU: perceived usefulness.