Death rates in Italy for the following groups of causes have been studied.
Haemophilia, purpura and other haemorrhagic conditions,
Pernicious anaemia,
Leukhaemia and Hodgkin's disease.
A study of the historical series shows a decreasing trend in death rates for the first two groups of causes and a rapidly increasing one for the third group. The study of death rates by age and sex shows, in the three groups of causes, a high death rate under 5 and over 50 years of age, with different characteristics from one group to another. Death rates for leukhaemia are higher in males than females.