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Table 7 Cluster description by active and illustrative variables

From: Unsupervised clustering of wildlife necropsy data for syndromic surveillance

Cluster Size Type of variable Modality % clustera % globalb V test
1 1057 active haemorrhage = yes 70.6 33.9 26.1
    hypertrophy = no 98.0 73.6 22.9
    other inflammation = no 95.0 70.3 21.3
    spleen = not affected 97.4 75.9 20.5
   illustrative cause of death = anticoag. pois. 12.8 2.3 18.7
    agent = anticoagulants 9.1 1.5 16.2
    species = roe deer 9.3 25.4 -14.0
2 1117 active diarrhoea = yes 46.5 8.6 infinite
    intestines = affected 80.9 30.3 37.8
   illustrative cause of death = coccidiosis 11.3 2.9 14.6
    cause of death = other int. paras. 10.4 4.1 9.8
    cause of death = other poisoning 6.0 2.4 7.4
    cause of death = DNR 36.3 27.0 7.3
3 1632 active haemorrhage = no 99.3 66.1 37.5
    spleen = not affected 99.0 75.9 29.2
    trachea = not affected 97.2 72.4 29.0
    liver = not affected 86.3 56.1 28.7
    congestion = no 86.0 56.0 28.5
    hypertrophy = no 95.9 73.6 25.9
    altered texture = no 99.0 82.7 23.4
   illustrative cause of death = other 16.2 6.6 15.4
    species = wood pigeon 5.6 1.9 10.6
    cause of death = resp. infection 8.7 4.1 10.6
    cause of death = shoot. accident 9.3 4.1 10.5
    species = roe deer 32.9 25.4 7.6
    cause of death = VHD 0.4 3.6 -9.3
    species = European brown hare 31.1 47.8 -15.1
    cause of death = EBHS 0.3 7.5 -15.5
4 518 active stomach = affected 51.0 8.5 26.7
    other inflammation = yes 75.7 29.7 22.3
    heart = affected 41.7 8.5 21.6
    parasitic lesions = yes 34.9 6.8 19.8
    transudates = yes 32.8 8.1 16.9
    necrosis = yes 33.0 9.4 15.5
    lung = affected 81.7 50.2 15.3
   illustrative agent = strongylida 75.7 33.2 20.4
    species = roe deer 64.1 25.4 19.2
    agent = trichurida 32.2 11.1 13.4
    species = European brown hare 10.8 47.8 -18.5
5 750 active other inflammation = yes 77.2 29.7 28.2
    lung = affected 92.1 50.2 25.8
    heart = affected 29.7 8.5 18.0
   illustrative agent = pasteurellaceae 20.1 7.9 11.3
    cause of death = resp. infection 13.2 4.1 10.8
    cause of death = pasteurellosis 14.0 5.0 10.0
    species = wild boar 8.4 3.7 6.3
6 892 active traumatic lesions = yes 75.2 9.2 infinite
    musculoskeletal system = yes 87.6 14.3 infinite
    haematoma = yes 41.7 10.9 25.9
   illustrative cause of death = other trauma 49.7 11.0 31.6
    species = roe deer 48.3 25.4 15.6
    cause of death = shoot. accident 9.5 3.7 8.3
7 808 active trachea = affected 84.9 27.6 36.0
    haemorrhage = yes 84.3 33.9 31.2
    altered texture = yes 51.9 17.3 23.9
    liver = affected 80.0 43.9 22.0
    congestion = yes 78.6 44.0 21.1
    lung = affected 83.8 50.2 20.8
    respiratory organs = affected 38.5 13.8 18.6
   illustrative cause of death = EBHS 30.7 7.5 21.2
    cause of death = VHD 19.4 3.6 19.2
    species = wild rabbit 25.4 9.0 14.6
    cause of death = other trauma 2.7 11.0 -9.1
    species = roe deer 6.4 25.4 -14.6
8 1306 active spleen = affected 87.9 24.1 infinite
    hypertrophy = yes 89.4 26.4 infinite
    liver = affected 66.3 43.9 17.7
    purulent inflammation = yes 44.7 25.3 16.6
   illustrative cause of death = yersiniosis 34.2 8.9 29.3
    species = European brown hare 82.4 47.8 28.0
    agent = yersinia 32.8 9.1 27.3
    cause of death = other trauma 4.1 11.0 -9.6
    species = roe deer 6.8 25.4 -18.6
9 629 active hypertrophy = yes 84.7 26.4 32.1
    spleen = affected 81.6 24.1 31.8
    trachea = affected 77.6 27.6 27.2
    altered texture = yes 63.1 17.3 27.0
    urinary/genital organs = affected 70.9 23.0 26.7
    congestion = yes 89.8 44.0 25.1
    liver = affected 88.6 43.9 24.3
    lymph nodes = affected 45.5 10.4 23.9
    haemorrhage = yes 71.5 33.9 20.0
   illustrative species = European brown hare 72.3 47.8 12.9
    cause of death = EBHS 23.1 7.5 12.9
    agent = eucoccidiorida 52.5 32.3 10.8
    cause of death = other trauma 2.7 11.0 -8.0
    species = roe deer 12.7 25.4 -8.0
  1. a Frequency of modality in cluster
  2. b Frequency of modality in the whole dataset
  3. Higher V-test values, p < 0.05
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