| on outcomes of assisted conception cycles | 7 | other |
| on the body | 6 | location |
| on pain scores | 5 | transitive-object |
| melatonin → have → effect | 30 |
| melatonin → have → significant effects | 4 |
| melatonin → have → the effect | 4 |
| melatonin → have → influence | 3 |
| melatonin → have → any effect | 3 |
| melatonin → have → profound effect | 3 |
| melatonin → have → significant effect | 3 |
| melatonin → have → several profound long-term effects | 3 |
| melatonin → have → direct impact | 3 |
| negative | neutral | positive |
| 0.138 | 0.670 | 0.192 |
| Raw frequency | 56 |
| Normalized frequency | 0.509 |
| Modifier score | 0.500 |
| Perplexity | 80.234 |