Table 4 Description of the 6 major clusters identified for the UK encephalitis data using hierarchical clustering.
| Cluster | Major Characteristics | Other |
|---|---|---|
|
Cluster 1 (n = 61) |
Abnormal WCC, lethargy, headache, fever |
Abnormal protein, gastro-intestinal symptoms, personality and behavioural change, animal contact |
|
Cluster 2 (n = 50) |
Abnormal protein, WCC, personality and behavioural change, fever | Animal contact |
|
Cluster 3 (n = 44) |
Personality and behavioural change, fever, |
Abnormal MRI, abnormal EEG, abnormal protein, abnormal WCC, lethargy, headache, gastro-intestinal animal contact |
|
Cluster 4 (n = 21) | Lethargy, Seizure, fever, animal contact |
Abnormal MRI, abnormal EEG, abnormal WCC, irritability, personality and behavioural change, recent infection |
|
Cluster 5 (n = 15) |
Abnormal EEG, abnormal WCC, seizure, headache, sick person contact | Fever |
|
Cluster 6 (n = 13) | Abnormal MRI, headache |
Abnormal CT, abnormal protein, abnormal WCC, lethargy, personality and behavioural change, focal neurological abnormality, other neurological symptoms |