Number of deaths related to drug poisoning where buprenorphine and/or methadone were mentioned on the death certificate by cause, England and Wales, 2007–2012
| 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | Total | |
|---|---|---|---|---|---|---|---|
| Methadone | 325 | 378 | 408 | 355 | 486 | 414 | 2366 |
| Accidental poisoning by drugs, medicaments and biological substances | 149 | 202 | 242 | 215 | 427 | 342 | 1577 |
| Assault by drugs, medicaments and biological substances | 1 | 2 | 1 | 0 | 0 | 2 | 6 |
| Intentional self-poisoning and poisoning of undetermined intent, by drugs, medicaments and biological substances | 42 | 32 | 26 | 42 | 48 | 47 | 237 |
| Mental and behavioural disorders due to drug use (excluding alcohol and tobacco) | 133 | 142 | 139 | 98 | 11* | 23 | 546 |
| Buprenorphine | 8 | 9 | 9 | 7 | 14 | 10 | 57 |
| Accidental poisoning by drugs, medicaments and biological substances | 2 | 4 | 8 | 5 | 12 | 8 | 31 |
| Assault by drugs, medicaments and biological substances | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Intentional self-poisoning and poisoning of undetermined intent, by drugs, medicaments and biological substances | 1 | 2 | 1 | 0 | 2 | 1 | 6 |
| Mental and behavioural disorders due to drug use (excluding alcohol and tobacco) | 5 | 3 | 0 | 2 | 0 | 1 | 10 |
*In January 2011 the Office for National Statistics introduced a new version of ICD-10 (v2010), which featured stricter criteria for recording under this category: http://www.ons.gov.uk/ons/rel/subnational-health3/deaths-related-to-drug-poisoning/2011/index.html.
Source: Office for National Statistics.
ICD-10, International Classification of Diseases, Tenth Revision.