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. 2022 Jan 27;20(1):e07025. doi: 10.2903/j.efsa.2022.7025

Table 21.

Comparison of classes of C13 between negative and positive reference pests

C13: Possibility of spread by human assistance Score Reference pests
Classification Total
Negative Positive
1 = The pest is spread locally through agricultural practices (mechanical transmission by human activities) 1 1 1 2
2 = The pest is unintentionally dispersed along major transportation routes (hitchhiker behaviour) 2 0 0 0
3 = The pest is spread via commodities intended for consumption, for transformation or as ephemeral ornaments 3 0 2 2
3 + 2 5 0 1 1
3 + 2 + 1 6 0 1 1
7 = The pest is spread via plants designated for planting in a sustainable way (ornamental plants, nursery seedlings, vegetable plants) or via plant organs intended to produce other plants (seeds, bulbs, tubers, budwood, rootstock) 7 3 1 4
7 + 1 8 4 1 5
7 + 2 9 1 7 8

7 + 2 + 1

or

7 + 3

10 1 14 15
7 + 3 + 1 11 0 1 1
7 + 3 + 2 12 0 4 4
Total 10 33 43

p‐value of the Chi2 test of independence: 0.0111.