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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Environ Res. 2016 Jan 11;146:191–199. doi: 10.1016/j.envres.2016.01.003

Table 4.

Root causes for acute paraquat- and diquat-related illness: SENSOR, PISP, and IDS data, 1998–2011.

Paraquat Diquat

(n=300) (n=144)

Root causea n (%) n (%)
One or more root causes identified 258(86) 129(90)
Required PPE not worn:b 100(33) 10(7)
 Required eye protection not worn or inadequate 56(19) 6(4)
  Required respirator not worn or inadequate 28(9) 1(1)
   Required gloves not worn or inadequate 27(9) 3(2)
  Other required PPE not worn or inadequate 23(8) 2(1)
Drift from application site 43(14) 12(8)
Spill/splash of liquid or dust 42(14) 23(16)
Application equipment failure 36(12) 25(17)
Label violations not otherwise specified 20(7) 10(7)
Decontamination not adequate or timely 19(6) 3(2)
Intentional harm 15(5) 13(9)
Improper storage 12(4) 13(9)
Applicator not properly trained or supervised 8(3) 0
No label violation identified but person still ill 7(2) 8(6)
People were in the treated area during application 3(1) 2(1)
Notification/posting lacking or ineffective 1(<1) 3(2)
Early re-entry into treated area 1(<1) 2(1)
Excessive application of pesticide 0 1(1)
Mixture of incompatible products 0 2(1)
Unknown 42(14) 15(10)

PPE=personal protective equipment.

a

Cases can have more than one root cause.

b

Row represents individual cases that did not wear one or more of the required PPE.