| in the regulation of sleep | 12 | transitive-object |
| in the body | 12 | location |
| in appetite regulation | 5 | other |
| hormone → have → role | 18 |
| hormone → have → important role | 10 |
| hormone → have → major role | 6 |
| hormone → interact → several roles | 4 |
| hormone → have → significant role | 4 |
| hormone → have → many roles | 3 |
| hormone → have → key role | 3 |
| negative | neutral | positive |
| 0.126 | 0.734 | 0.140 |
| Raw frequency | 48 |
| Normalized frequency | 0.547 |
| Modifier score | 0.700 |
| Perplexity | 147.031 |