This study discusses variability in the spatial prevalence of suicide
and parasuicide across small areas in London in relation to the social
and demographic composition of their populations. The focus is on the
relative importance in explaining suicidal outcomes of variables repr
esenting respectively social deprivation, psychiatric morbidity and an
omie (or community fragmentation), and of differentiation in the effec
ts of these factors across sub-populations. There is strong evidence f
or such contextual effects-namely, varying effects of these socio-econ
omic factors according to geographical setting-as well as for differen
tial associations by age group, sex and type of outcome (suicide vs pa
rasuicide).