The stability and variability of suicide rates in the states of the USA.
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.
Lester
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Psychology Program, Richard Stockton State College, Pomona, NJ 08240-9988.
D003430:Cross-Sectional Studies; D006801:Humans; D015994:Incidence; D013405:Suicide / Q000639:trends*; D014481:United States / Q000453:epidemiology