A repeated cross-sectional study on the implementation of electronic medication management system

Many IS studies focus on initial user perceptions as drivers of initial IS success, but these perceptions may change over time. This study aims to examine whether there is any difference in the drivers of IS success between the initial adoption and the initial assimilation stages. With the Expectation Confirmation Model as the theoretical lens, a repeated cross-sectional study was conducted regarding clinicians’ perceptions of the implementation of electronic medication management systems (eMMS) in an Australian hospital, one at the time of implementation and another one at one year after the implementation. The results indicated that the means of perceived usefulness, perceived ease of use, social influence, clinician satisfaction, and organizational benefits are significantly higher in the initial assimilation stage than in the initial adoption stage, which means that expectations have been positively confirmed in the initial assimilation stage. More importantly, while perceived usefulness and social influence remain important one year after the implementation, perceived ease of use and facilitating conditions are moving toward a decrease in importance to the success of eMMS. This study provides a better understanding of how the importance of the factors influencing eMMS success changes over time.