Table 4.

Correlation matrix of the latent constructs with square root of average variance extracted (AVE) in the diagonal (total sample).

Constructa		1	2	3	4	5	6	7	8	9	10	11	12	13
1	PEOU	0.94
2	PU	0.22	0.86
3	Age	0.07	–0.09	—
4	Gender	0.06	0.04	–0.18	—
5	Digital literacy	0.19	0.17	–0.15	–0.13	—
6	Feelings about the Internet	0.25	0.19	–0.11	–0.02	0.49	—
7	Value of health-related knowledgeability	0.14	0.32	0.01	0.01	0.20	0.16	0.86
8	Daily private Internet use	–0.01	0.20	–0.19	0.03	0.18	0.18	0.16	—
9	Daily private Internet use health	–0.07	0.09	–0.05	0.06	0.03	0.05	0.09	0.21	—
10	Apps use	0.29	–0.11	–0.27	–0.05	0.21	0.24	0.23	0.15	0.17	—
11	Attitude toward PRWs	0.26	0.34	–0.07	0.06	0.18	0.20	0.46	0.10	0.16	0.19	0.93
12	Adoption of physician-rating apps	0.23	0.28	–0.17	–0.04	0.30	0.36	0.34	0.13	0.03	0.31	0.53	—
13	Willingness to pay for physician-rating apps	–0.01	0.24	–0.16	0.03	0.16	0.20	0.33	0.15	0.13	0.37	0.39	0.53	0.97

^a PEOU: perceived ease of use; PU: perceived usefulness.