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The study describes the mortality (1951-1986) and morbidity (1977-1988) from appendicitis in Spain. Mortality decreased steadily throughout the study period; it was higher in men and in the elderly, both men and women. Hospital morbidity from appendicitis decreased by 40% from 1977 to 1988; this decrease was more pronounced in elderly patients; morbidity was higher in patients 15 to 24 years old. Possible causes of this evolution in morbidity are discussed.

In review of the rising bladder cancer mortality rate in Spain and its involvement in connection with other "risk factors", according to recent contributions, we proceeded to review these factors involved and to carry out an epidemiological study describing its mortality from 1968 to 1982, through specific mortality rates per hundred thousand in males and females, as well as the study by age groups from 50 upwards, concentrating on more highly affected ages. We also carried out transverse studies for the three years 1968, 1975 and 1982 and reviewed the evolution of mortality in accordance with the chorts of births. On the whole, we observe a continual rise in mortality due to this cancer, at a much higher level in the masculine sex, and we make interpretation as to its association with "risk factors" connected with life style.