Mortality trends for chronic nephritis and infections of the kidney

The hypothesis is tested that, for the United States, in the absence of changes in diagnostic criteria, the combined death rates for chronic nephritis and infections of the kidney between 1950 and 1960 should have remained constant. The study population consisted of all residents of New Haven, Connecticut who died in New Haven during the triennia 1949–1951 and 1959–1961 from the underlying causes of chronic nephritis and infections of the kidney...