Table 6.
Focus of the selected articles over time.
| Category | 2012, N | 2013, N | 2014, N | 2015, N | 2016, N | 2017, N | 2018, N | 2019, N | Total, N |
| Apps | 0 | 0 | 1 | 1 | 1 | 6 | 3 | 2 | 14 |
| SMARTa | 0 | 0 | 0 | 0 | 3 | 1 | 1 | 0 | 5 |
| FHIRb implementations models | 0 | 0 | 0 | 1 | 1 | 3 | 6 | 1 | 12 |
| FHIR resources | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 5 |
| FHIR framework | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 11 |
| Mapping framework/data model | 0 | 1 | 0 | 4 | 4 | 2 | 4 | 4 | 19 |
| Challenges | 0 | 0 | 0 | 0 | 1 | 4 | 3 | 3 | 11 |
| FHIR goals | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 3 |
| Total | 0 | 1 | 1 | 6 | 10 | 19 | 17 | 26 | 80 |
aSMART: Substitutable Medical Applications Reusable Technologies.
bFHIR: Fast Health Interoperability Resources.