Infant mortality rates, a measure of the quality of medical care, was associated with homicide rates, but not suicide rates, over nations and over the American states.
The percentage of fundamentalists in the USA contributed to the prediction of homicide rates of the American states in 1980 but not to the prediction of suicide rates.
The suicide rates of foreign-born persons in the 48 continental American states were associated with the suicide rates of those born in noncontiguous states, whereas the suicide rates of those born in-state were associated with the suicide rates of those born in contiguous states.
Violent and nonviolent suicide rates in the American states in 1980 showed different social correlates, but both patterns were different from those for homicide rates.
A social stress index for American states in 1980 did not add to the predictability of state suicide rates over that obtained from previously identified factors of social characteristics but did so for homicide rates.
Suicide rates were associated with measures of legitimate violence and social disorganization over the 48 continental American states, whereas homicide rates for 1980 were associated with a measure of gender equality.
The suicide rates of the American states in 1918–1922 were only weakly associated with the rates in 1980. The mean rate had not changed by 1980, but the standard deviation of the rates had decreased.
Ecological studies of regional suicide rates in Russian oblasts and krais and American states revealed that the clustering of social indicators and the social correlates of regional homicide rates were different in the two nations. However, indices of social distress (unemployment and illegitimate births) predicted homicide rates in both nations. The study pointed out the importance of replicating research in several nations in order to explore the generality of research findings and theories.
