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Table 1 Activity-related weighting scheme to carry out PEA for different safety scenarios

From: Spatial modeling of personalized exposure dynamics: the case of pesticide use in small-scale agricultural production landscapes of the developing world

Activity at time steps (periods) modeled Low safety High safety Justifications for weights in different safety scenarios (impact of activity on exposure)
At home/nearby (t1–t4) 0.4 0.3 Frequent contacts with surfaces without protection but outside fields (lower H values). Higher risk "perception" in high-safety scenario.
Traveling to field (t5–t6) 0.3 0.2 Uptake at shoes/clothes possible but mostly outside fields. Different clothes/shoes for work and at home in high-safety scenario.
Working on the field (t7–t23) 1 0.6 Frequent dermal contacts and inhalation (primary drift) on the field; Low safety scenario: no protection equipment (same clothes at home and for work, no gloves, masks, glasses, or coveralls); High safety scenario: Different clothes for work and at home, and "some" protection equipment
Traveling back (t24–t25) 0.3 0.2 See traveling above
At home/nearby (t26–t32) 0.4 0.3 See being at home above
  1. t#1–t#2: Period (number of time steps) in which activity is performed and thus the weights in the same row are used for different safety scenarios.