"Figure 4: Percentage of drug misuse deaths, by underlying cause and sex, deaths registered in 2017","" "England and Wales","" "","" "Notes","1. Cause of death was defined using the International Classification of Diseases, Ninth Revision (ICD-9) for the years 1993 to 2000 and Tenth Revision (ICD-10) from 2001 onwards. More details can be found in the Quality and Methodology Information. 2. There are very few deaths from assault by drugs, so for presentation purposes, these have been combined with mental and behavioural disorders due to drug use. 3. Figures are for deaths registered, rather than deaths occurring in each calendar year. 4. Deaths of persons usually resident in each country and region, based on boundaries as of May 2018." "Unit","%" "","" "Underlying cause of death","Accidental poisoning","Suicide","Mental and behavioural disorders and assault by drugs" "Males","83","11","6" "Females","72","26","2"