In a retrospective study of 69 elderly (65 years and over) cases of at
tempted suicide (deliberate self-harm) referred for psychiatric assess
ment in southern Sydney, 81% took overdoses, 64% involving benzodiazep
ines. Depressive illness was present in 87% of cases, alcohol/substanc
e abuse in 32%, organic brain syndromes in 29% and personality dysfunc
tion in 26%. Multiple psychosocial, psychological, medical and psychia
tric risk factors for suicide were identified. 'Major' functional psyc
hiatric disorders (41%) were found predominantly in females and were a
ssociated with higher levels of suicidal intent, psychosis and fewer c
hronic physical illnesses. 'Minor' functional disorders (30%) were ass
ociated with lower degrees of suicidal intent, personality dysfunction
and higher numbers of psychosocial stressors. Organic brain syndromes
were associated with males over 75 years, chronic physical illness, a
nd were often comorbid with depression. These findings indicate that t
here are several patterns of suicidal behaviour in the elderly that re
quire further prospective research.