| to help compare the different tools | 11 | purpose |
| based on this literature review | 9 | other |
| specifically | 7 | manner |
| protocol → be → developed | 344 |
| protocol → be developed for → use | 8 |
| protocol → be developed as → result | 4 |
| protocol → be developed for → example | 3 |
| protocol → be developed in → addition | 3 |
| negative | neutral | positive |
| 0.074 | 0.744 | 0.183 |
| Raw frequency | 362 |
| Normalized frequency | 0.878 |
| Modifier score | 0.650 |
| Perplexity | 210.791 |