| from the group | 29 | other |
| based on the inclusion criteria | 15 | cause |
| randomly | 12 | manner |
| article → be → selected | 441 |
| article → be → chosen | 123 |
| article → be → picked | 13 |
| negative | neutral | positive |
| 0.063 | 0.763 | 0.174 |
| Raw frequency | 577 |
| Normalized frequency | 0.707 |
| Modifier score | 0.852 |
| Perplexity | 162.696 |