Table 3.
Prototypes of clusters identified in the proximity matrix of the final multivariable mixed-effects random forest model; a prototype is the representative value of class in a cluster; for numerical values that is the median and for binary the highest frequencies of 0 or 1
| Feature | Gini Importance in % | Predicted Usage | Cluster 1 | Cluster 2 | Cluster 3 | Cluster 4 | Cluster 5 | Cluster 6 | All farms as one cluster | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| value | % | value | % | value | % | value | % | value | % | value | % | value | % | |||
| TIDDDvet _What is your current antimicrobial usage? | Low User | 0 | 4.77 | 0 | 7.34 | 8.9 | 8.9 | 4.37 | ||||||||
| High User | 339.48 | 91.71 | – | 85.73 | 102.9 | 144.2 | 146.23 | |||||||||
| Predicted TIDDDvet | Low User | 9.37 | 13.39 | 0.72 | 10.74 | 10.3 | 23 | 5.69 | ||||||||
| High User | 267.13 | 92.9 | – | 90.57 | 56.91 | 128.51 | 141.09 | |||||||||
| bqq011_How many chickens are there for each set-up/round on average? | 16.2% | Low User | 18 000 | 100 400 | 34 800 | 83 500 | 30 000 | 30 500 | 34 550 | |||||||
| High User | 40 000 | 80 000 | – | 34 925 | 44 880 | 26 000 | 43 000 | |||||||||
| bqq002_How many people are working at the poultry farm in total? | 13.5% | Low User | 7.5 | 1.5 | 1 | 2.5 | 2 | 3 | 2 | |||||||
| High User | 2 | 2 | – | 2 | 2 | 2 | 2 | |||||||||
| bqq010_How many rounds do you have on average? | 12.9% | Low User | 5.75 | 7.5 | 8 | 8.2 | 6 | 6.5 | 7.45 | |||||||
| High User | 5.5 | 7 | – | 7.5 | 5 | 5.5 | 6 | |||||||||
| bqq045_Are visitors obliged to check in before having entrance to the stables? | 6.9% | Low User | 1 | 100% | 1 | 100% | 1 | 63% | 1 | 100% | 0 | 100% | 1 | 67% | 1 | 52% |
| High User | 1 | 100% | 1 | 100% | – | 1 | 100% | 0 | 100% | 1 | 95% | 1 | 97% | |||
| bqq075_Is there a farm specific protocol for vaccination of non-officially controlled diseases that is complied with? | 5.2% | Low User | 1 | 83% | 1 | 100% | 0 | 100% | 1 | 67% | 1 | 94% | 1 | 100% | 1 | 60% |
| High User | 1 | 94% | 1 | 100% | – | 1 | 72% | 1 | 67% | 1 | 100% | 1 | 93% | |||
| bqq024_In how many steps is the poultry house depopulated? | 5.1% | Low User | 1 | 83% | 1 | 100% | 0 | 94% | 0 | 67% | 0 | 65% | 1 | 100% | 0 | 62% |
| High User | 1 | 66% | 1 | 82% | – | 0 | 67% | 1 | 100% | 1 | 95% | 1 | 72% | |||
| bqq096_Is the drinking water system fully disconnected and cleaned/disinfected? | 3.9% | Low User | 0 | 67% | 1 | 100% | 0 | 81% | 0 | 50% | 0 | 71% | 0 | 100% | 0 | 70% |
| High User | 0 | 98% | 1 | 100% | – | 1 | 56% | 0 | 100% | 0 | 100% | 0 | 62% | |||
| bqq080_Are there disinfection baths for vehicles present at the entry of the company? | 3.6% | Low User | 1 | 100% | 0 | 100% | 0 | 100% | 0 | 83% | 0 | 100% | 0 | 100% | 0 | 86% |
| High User | 1 | 96% | 0 | 100% | – | 0 | 100% | 0 | 100% | 0 | 95% | 0 | 63% | |||
| bqq103e_Is length ventilation used in the poultry house? | 3.5% | Low User | 0 | 100% | 0 | 50% | 0 | 88% | 0 | 67% | 0 | 94% | 0 | 100% | 0 | 88% |
| High User | 0 | 76% | 1 | 77% | – | 0 | 50% | 0 | 67% | 0 | 86% | 0 | 58% | |||
| bqq060_Is the farm fenced off? | 3.4% | Low User | 1 | 83% | 0 | 100% | 0 | 100% | 0 | 83% | 0 | 71% | 0 | 67% | 0 | 76% |
| High User | 1 | 58% | 0 | 74% | – | 1 | 56% | 0 | 67% | 1 | 67% | 0 | 51% | |||
| bqq078_What is the poultry density of the poultry house? | 3.3% | Low User | 0 | 50% | 1 | 100% | 1 | 88% | 1 | 100% | 1 | 88% | 1 | 67% | 1 | 84% |
| High User | 0 | 74% | 1 | 97% | – | 1 | 61% | 1 | 100% | 1 | 62% | 1 | 60% | |||
| bqq055_Are specific preventive measures taken for the material supply? | 2.6% | Low User | 1 | 83% | 0 | 100% | 1 | 56% | 0 | 67% | 0 | 71% | 0 | 100% | 0 | 58% |
| High User | 0 | 54% | 0 | 97% | – | 0 | 89% | 0 | 100% | 0 | 86% | 0 | 78% | |||
| bqq084_Is the efficacy of cleaning/disinfection checked by taking a hygienogram? | 2.6% | Low User | 1 | 67% | 1 | 100% | 0 | 50% | 1 | 100% | 0 | 100% | 0 | 67% | 0 | 58% |
| High User | 1 | 64% | 1 | 97% | – | 1 | 78% | 0 | 67% | 0 | 67% | 1 | 70% | |||
| bqq102_Is stable specific clothing available? | 2.5% | Low User | 1 | 83% | 0 | 100% | 1 | 63% | 1 | 67% | 1 | 53% | 1 | 100% | 1 | 62% |
| High User | 1 | 52% | 0 | 56% | – | 0 | 56% | 0 | 67% | 0 | 62% | 0 | 54% | |||
| bqq101_Is material stored per stable recognisably? | 2.5% | Low User | 1 | 100% | 0 | 100% | 1 | 75% | 1 | 83% | 0 | 53% | 1 | 67% | 1 | 66% |
| High User | 1 | 62% | 1 | 59% | – | 1 | 67% | 0 | 67% | 1 | 52% | 1 | 60% | |||
| bqq087_Is there a FARM-hygiene lock present? | 2.4% | Low User | 1 | 100% | 1 | 100% | 1 | 100% | 1 | 67% | 1 | 71% | 1 | 100% | 1 | 86% |
| High User | 1 | 78% | 0 | 77% | – | 0 | 78% | 1 | 67% | 1 | 57% | 1 | 50% | |||
| bqq050_Are visitors/personnel obliged to wash/disinfect hands before entering? | 2.1% | Low User | 1 | 100% | 0 | 50% | 1 | 94% | 0 | 50% | 0 | 94% | 1 | 67% | 1 | 56% |
| High User | 1 | 90% | 0 | 87% | – | 0 | 78% | 0 | 100% | 0 | 62% | 0 | 53% | |||
| bqq033_When checking water quality, where is the water sample taken? | 2.1% | Low User | 0 | 67% | 1 | 100% | 0 | 50% | 1 | 67% | 1 | 59% | 1 | 67% | 1 | 56% |
| High User | 0 | 54% | 1 | 67% | – | 1 | 72% | 1 | 100% | 1 | 71% | 1 | 61% | |||
| bqq023_Are visitors/traders allowed to enter the stables/have direct contact? | 2.1% | Low User | 0 | 100% | 1 | 100% | 0 | 69% | 0 | 83% | 1 | 100% | 1 | 67% | 1 | 54% |
| High User | 0 | 92% | 0 | 80% | – | 0 | 89% | 1 | 100% | 1 | 81% | 0 | 74% | |||
| bqq103b_Is roof ventilation used in the poultry house? | 1.9% | Low User | 1 | 67% | 1 | 100% | 0 | 69% | 1 | 67% | 0 | 100% | 0 | 67% | 0 | 68% |
| High User | 0 | 68% | 0 | 54% | – | 0 | 56% | 0 | 100% | 0 | 95% | 0 | 67% | |||
| bqq066_Is there natural stagnant water or running water within less than 1 km of the farm? | 1.6% | Low User | 0 | 100% | 0 | 50% | 1 | 88% | 0 | 50% | 1 | 59% | 0 | 100% | 1 | 56% |
| High User | 0 | 52% | 1 | 69% | – | 1 | 61% | 1 | 67% | 0 | 57% | 1 | 56% | |||