Complex suicide

Complex suicide, distinguished from simple suicide, is the act of intentionally causing one's death with more than one method, either simultaneously or sequentially. Suicide is a pervasive public health concern among the leading causes of death worldwide and remains geographically heterogeneous. Despite the relative ubiquity of simple suicides, complex suicides are rare, only estimated to account for between 1.5 and five percent of suicides. Though few studies have examined the prevalence or base rates of complex suicide, Demirci and associates (2009) notably found that 1.8% of cases from a pool of 878 constituted a complex suicide. Similarly, Racette and Sauvageau (2007) found that 2.1% of 893 cases in Quebec constituted a complex suicide.

Complex suicides are further distinguished from complicated suicides, which are characterized by the victim sustaining unintentional secondary trauma resulting from a single suicide method (e.g., falling injuries, drowning). Complicated suicides may also be more infrequent or less identified; Törő and Pollak (2009) found that of the 1217 suicides investigated by the Budapest Institute of Forensic Medicine, only six (0.5%) were identified as such, compared to 54 (4.4%) as complex. Due to the combined methods used by complex suicide victims, researchers have highlighted the problems related to distinguishing between this self-inflicted behavior and homicides due to resulting ambiguity.

Most research on complex suicide, of which there is little, is largely sourced from case studies and series published in forensic pathological literature by Eastern and Southern Europe and Western Asia authors.