Parasuicide admissions to the Regional Poisoning Treatment Centre in Edinburgh are reviewed over the seven year period 1968-74. Special emphasis is given to trends in parasuicide rates for Edinburgh City, but social and clinical data are also described. Though the mean annual increase for admissions is 10-6 per cent, recent years have shown a fall in the rates for men and a levelling off for women. There have been increases in the rates for the young, for men in social classes 4 and 5 and for divorced women, and in poisonings with psychotropic drugs and alcohol consumption among women. At the same time it is important to note variables which have not changed: the relative risks by age and sex, repetition rates, the diagnostic picture, poisoning with non-prescribed drugs, and the rank order of municipal ward rates: and variables which have diminished: the rates for divorced men, overcrowding, domestic gas and barbiturate poisoning, and drug misuse. A comprehensive explanation of parasuicide in the contemporary scene would have to explain both the consistencies and the changing trends. The answer to the central question of why parasuicide is changing remains elusive.

A consecutive series of 110 undertermined deaths (U.D.) was compared with matched samples of suicides and accidents recorded in the same metropolitan Coroner's District. The hypothesis tested was that U.D. are mostly concealed suicides and will resemble known suicides more closely than accidents. The samples were compared on social and demographic variables, psychiatric and physical illness, evidence of suicide intent, information available to the Coroner and the circumstances of death. The results did not confirm the hypothesis. The study widens the investigation of the mortality of mental disorder from unnatural causes beyond the category of suicide.

Psychiatric morbidity in the dependent aged was studied in the elderly population of Hobart's nursing homes and long-stay hospitals. Only patients with home addresses in Hobart and who were admitted for the first time aged 70 years or over were included. Three hundred and twelve persons were interviewed with a standard interview, and an informant was interviewed when appropriate. The medical records were searched for diagnoses and drug treatments. Physical disability was rated on an ad hoc scale. Comparisons were made of the prevalence of dementia, depression and anxiety in different types of unit, and between these and two domiciliary samples, one of which received domiciliary nursing services (n = 100) and the other not (n = 100). The differential use of institutions by men and women, and a possible sex difference in the prevalence of dementia is discussed.