Table 1.
Factors influencing the frequency of use of the computerized physician order entry system by physicians.
| Theme, construct, and factor | Studies, n | Study | ||
| Individual factors | ||||
| Performance expectancy: perception that using CPOEa will improve the physician’s job performance [18] | ||||
| Perceived usefulness | 1 | [29] | ||
| Relative advantage | 1 | [30] | ||
| Effect on quality of care and/or patient outcomes | 3 | [25,26,32] | ||
| Effects on productivity | 2 | [25,34] | ||
| Effects on safety | 1 | [24] | ||
| Performance outcomes | 1 | [25] | ||
| Effort expectancy: belief that the CPOE is easy to use [18] | ||||
| Ease of use | 3 | [28,29,32] | ||
| User-friendliness | 1 | [31] | ||
| Difficult to use | 2 | [24,25] | ||
| Complexity | 1 | [30] | ||
| Social influence: perceived importance of others’ (eg, leaders, colleagues) opinions that the physician should or should not use the system [18] | ||||
| External normative beliefs | 1 | [25] | ||
| Organizational factors | ||||
| Facilitating conditions: available resources, facilities, and infrastructure that facilitate using CPOE [18] | ||||
| Training | 4 | [24,25,33,34] | ||
| Availability of technical support | 4 | [25,27,31,32] | ||
| Compatibility | 1 | [30] | ||
| Computer skills | 1 | [34] | ||
| Time constraints | 3 | [24,25,27] | ||
| Availability of hardware | 2 | [25,27] | ||
| Lack of awareness of the availability of certain features | 1 | [33] | ||
| Management support | 1 | [25] | ||
| User involvement | 1 | [25] | ||
| Technological factors | ||||
| Information quality: relevance, accuracy, comprehensiveness, understandability, prevalence, timeliness, and usability of the outputs or content [19] | ||||
| Usefulness of error messages | 1 | [32] | ||
| Clarity and brevity of the reminders | 1 | [31] | ||
| Confidentiality, privacy, and security of patients’ records | 1 | [25] | ||
| System quality: reliability, functionality, flexibility, ease of use, integration, and response time of the system [19] | ||||
| Clarity | 2 | [28,32] | ||
| Layout | 1 | [31] | ||
| Technical problems causing delays during prescribing | 1 | [31] | ||
| System’s speed | 3 | [31,32,34] | ||
| Software barriers | 1 | [25] | ||
| Reliability | 1 | [32] | ||
| Customization to individual departments | 2 | [25,33] | ||
| Functionality of the tools in the system | 1 | [34] | ||
| Locating items on the system | 1 | [32] | ||
| Retrieval of radiology data | 1 | [32] | ||
| Usability | 1 | [24] | ||
| System’s efficiency | 2 | [24,26] | ||
| Availability of reference materials | 1 | [32] | ||
| Alert fatigue | 2 | [24,33] | ||
aCPOE: computerized physician order entry.