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Table 1 Grading system to evaluate the extent each drug would contribute to drowning

From: Unintentional drowning: Role of medicinal drugs and alcohol

Grade Effect
0 None
1 Not probable
2 Fairly improbable
3 Cannot be excluded not confirmed
4 Cannot be excluded
5 Quite probable
6 Probable
  1. Adapted from Lillsunde P. Blood. In: Drugs and driving - analytical and epidemiological aspects. Publications of the National Public Health Institute; 1996:29–30-31 with author’s permission