| for concern | 5 | purpose |
| sometimes | 4 | temporal |
| because of the repetitive insertion of needles | 3 | cause |
| process → can → cause | 74 |
| process → could → cause | 17 |
| process → be → cause | 14 |
| process → have → many causes | 10 |
| process → have → cause | 4 |
| process → be → causes | 4 |
| negative | neutral | positive |
| 0.505 | 0.430 | 0.066 |
| Raw frequency | 123 |
| Normalized frequency | 0.459 |
| Modifier score | 0.586 |
| Perplexity | 240.109 |