Age, period and cohort effects on suicide rates in Australia, 1919-1999.
OBJECTIVE
To examine age, period and cohort effects on Australian suicide rates.


METHODS
Male suicide rates for successive 5-year periods between 1919 and 1998, and for 1999 were displayed graphically to examine interactions between age, period and cohort effects.


RESULTS
There has been a pronounced period effect on male suicide rates in all age groups over the last few decades, with lower rates in wartime and peak rates for most cohorts in the 1960s. Peak rates of all adult female 5-year age cohorts occurred in the 1960s or early 1970s.


CONCLUSIONS
Most so-called cohort effects appear to be associated with environmental changes that may not be a function of the cohort itself. While much attention has focused on the rising suicide rates in young males in Australia, local media and health authorities have given little emphasis to the high rates found in elderly males.
Snowdon
J
J
Department of Psychological Medicine, University of Sydney, Sydney, Australia. jsnowdon@mail.usyd.edu.au
Hunt
G E
GE
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001315:Australia / Q000453:epidemiology; D002648:Child; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017678:Sex Distribution; D013405:Suicide / Q000706:statistics & numerical data* / Q000639:trends*; D013997:Time Factors