Table 2.
Measures of health information exchange usage in prior research
| Level | Measure |
| Individual | |
| Access39 44 | |
| Additional feature and modification request by individuals40 | |
| Diversity of information36 | |
| Frequency of access compared to a target level44 | |
| Frequency of feature use37 | |
| Improved knowledge about patients36 | |
| Percent of users accessing system34 40 43 | |
| Time processing messages36 | |
| Usability43 | |
| User satisfaction36 39 | |
| Workflow changes36 | |
| Group | |
| (none) | |
| Organizational | |
| Breadth (number of exchange partners)45 | |
| Depth (technical sophistication)45 | |
| Diversity (categories of clinical information provided)45 46 | |
| Percent of encounters accessed43 | |
| Volume (percent of information exchanged electronically)45 | |
| Network | |
| Access (per patient basis)34 | |
| Diversity (categories of clinical information provided)19 35 38 47 | |
| Number of unique patients accessed39 | |
| Percent of emergency encounters accessed17 43 | |
| Percent of information exchanged38 42 | |
| Percent of organizations providing data42 | |
| Organizations providing or viewing data35 | |
| Volume of information41 47 | |