Table A1.
Construct | Item | Content |
---|---|---|
Attitude (ATT) [98,99] | ATT1 | Using OMC is (would be) a good idea. |
ATT2 | I like (would like) using OMC. | |
ATT3 | It is desirable for me to learn how to use OMC. | |
Behavioral intention (BI) [98,100] | BI1 | I plan to use OMC frequently. |
BI2 | I intend to use OMC when needed. | |
BI3 | If feasible, I will use OMC. | |
Cognitive reputation (CR) [101,102] | CR1 | OMC service is provided by prestigious hospitals. |
CR2 | OMC platforms’ partners have a good reputation. | |
CR3 | I think the reputation of the OMC platform is the main reason I am considering using it. | |
CR4 | I think the main reason for using an OMC platform is its good reputation. | |
Network externalities (NE) [103] | NE1 | I think a good number of people use OMC platforms. |
NE2 | I think most people are using OMC. | |
NE3 | I think there will still be many people joining OMC platforms. | |
NE4 | I think many friends around me use OMC. | |
NE5 | I think most of my friends are using OMC. | |
NE6 | I anticipate many friends will use OMC in the future. | |
Perceived ease of use (PEOU) [40] | PEOU1 | It is easy for me to learn how to use OMC. |
PEOU2 | I find it easy to get OMC to do what I want (e.g., inquire about personal health information and communicate with professionals). | |
PEOU3 | I think OMC are complicated to understand. | |
PEOU4 | Interacting with the OMC platforms requires only a little of my mental effort. | |
Perceived privacy protection (PPP) [104] | PPP1 | If the OMC platform wants to use my personal information for some unauthorized purposes, it would ask for my permission in advance. |
PPP2 | If the OMC platform wants to share my personal information with others, it would ask for my permission in advance. | |
PPP3 | I think the OMC platform would not sell users’ personal information to others without users’ permission. | |
PPP4 | I think the OMC platform has taken strict measures and established mechanisms to protect users’ personal information. | |
PPP5 | I think the OMC platform has provided good information protection for users. | |
Perceived risk (PR) [102] | PR1 | Using OMC would involve more health risks when compared with offline medical consultation. |
PR2 | Using OMC would involve more financial risk when compared with offline medical consultation. | |
PR3 | I think the overall risk of OMC is higher than offline medical consultation. | |
Perceived usefulness (PU) [40,98,102] | PU1 | Using OMC enhances my effectiveness in medical consultation. |
PU2 | Using OMC enhances the effect of medical consultation. | |
PU3 | Using OMC provides me access to useful health information. | |
PU4 | Using OMC improves my health condition. | |
PU5 | OMC enables me to accomplish a medical consultation more quickly than offline medical consultation. | |
Trust (TRU) [105] | TRU1 | In general, OMC (platforms/ healthcare professionals) are trustworthy. |
TRU2 | OMC (platforms/ healthcare professionals) give the impression that they keep promises and commitments. | |
TRU3 | I believe that OMC (platforms/ healthcare professionals) have my best interests in mind. | |
Interactivity (INT) [106] | INT1 | OMC platforms are effective in gathering users’ feedback. |
INT2 | OMC platforms facilitate two-way communication between users and healthcare professionals. | |
INT3 | OMC platforms make me feel they want to listen to their users. | |
INT4 | OMC platforms allow users to talk back and provide feedback. |
Note: PEOU3 was the reversed question for experimental design. The item’s entry was corrected in data analysis to reflect the original definition of the corresponding construct. The original questionnaires were in Chinese. They were translated into English and reviewed to ensure the translation was correct.