| in acute nociceptive pain | 8 | temporal |
| in children | 4 | location |
| particularly | 2 | degree |
| codeine → be → effective | 9 |
| codeine → be shown to be → effective | 4 |
| negative | neutral | positive |
| 0.183 | 0.269 | 0.548 |
| Raw frequency | 13 |
| Normalized frequency | 0.452 |
| Modifier score | 0.500 |
| Perplexity | 363.557 |