| following decontamination with soap and water | 4 | other |
| by the pcr method | 3 | manner |
| swab → be → positive | 7 |
| swab → be → negative | 4 |
| negative | neutral | positive |
| 0.160 | 0.638 | 0.202 |
| Raw frequency | 11 |
| Normalized frequency | 0.613 |
| Modifier score | 1.000 |
| Perplexity | 190.616 |