| in the 1800s | 11 | temporal |
| in the united states | 4 | location |
| in both rural and urban areas | 3 | location |
| malaria → be → rampant | 21 |
| malaria → be → rife | 17 |
| negative | neutral | positive |
| 0.649 | 0.293 | 0.058 |
| Raw frequency | 38 |
| Normalized frequency | 0.499 |
| Modifier score | 0.500 |
| Perplexity | 65.197 |