Psychological Medicine

Patterns of co-morbidity in male suicide completers

C. D. KIM a1, A. LESAGE a1, M. SEGUIN a1, N. CHAWKY a1, C. VANIER a1, O. LIPP a1 and G. TURECKI a1c1
a1 McGill Group for Suicide Studies, Douglas Hospital Research Centre, McGill University and Centre de Recherche Fernard Seguin, University of Montreal, Montreal, Quebec, Canada

Article author query
kim c   [PubMed][Google Scholar] 
lesage a   [PubMed][Google Scholar] 
seguin m   [PubMed][Google Scholar] 
chawky n   [PubMed][Google Scholar] 
vanier c   [PubMed][Google Scholar] 
lipp o   [PubMed][Google Scholar] 
turecki g   [PubMed][Google Scholar] 


Background. Psychiatric co-morbidity is thought to be an important problem in suicide, but it has been little investigated. This study aims to investigate patterns of co-morbidity in a group of male suicide completers.

Method. One hundred and fifteen male suicide completers from the Greater Montreal Area and 82 matched community controls were assessed using proxy-based diagnostic interviews. Patterns of co-morbidity were investigated using latent class analysis.

Results. Three subgroups of male suicide completers were identified (L2=171·62, df=2012, P<0·05), they differed significantly in the amount of co-morbidity (Kruskal–Wallis χ2=71·227, df=2, P<0·000) and exhibited different diagnostic profiles. Co-morbidity was particularly found in subjects with disorders characterized by impulsive and impulsive–aggressive traits, whereas subjects without those traits had levels of co-morbidity which were not significantly different from those of controls (χ2=8·17, df=4, P=0·086).

Conclusions. Suicide completers can be divided into at least three subgroups according to co-morbidity: a low co-morbidity group, a substance-dependent group and a group exhibiting childhood onset of psychopathology.

c1 Dr Gustavo Turecki, McGill Group for Suicide Studies, Douglas Hospital, McGill University, 6875 LaSalle Boulevard, Verdun, QC H4H 1R3, Canada.