The current mortality rates of radiologists and other physician specialists: specific causes of death.

We compared the radiologist 's experience at cohort mortality over 50 years with other experts with low levels of radiation exposure. Several chronic diseases have the highest mortality rate among radiologists in 1920 - 1929 participating in the North American Radiation Society. After this initial stage, the radiologist evaluated that the death rate due to cancer was the highest. The excess risk of leukemia observed in the group between 1920 - 1929 and 1930 - 1939 subsequently decreased. At the same time, the mortality rate of lymphoma, especially multiple myeloma, markedly increased the number of deaths experienced by radiologists admitted to the professional association between 1940 and 1949 between 1930 and 1939 . Possible relationships between this finding and radiation induced immunological changes have been proposed.

Given the experience of radiologists and other experts in cohort mortality over 50 years, it is postulated that these populations differ from the expected reduction in radiation exposure. In comparison with other experts who entered the cohort of the North American Radiation Society before 1940, the radiologist's total death cause mortality rate is too high, even if the number of deaths from cancer is excluded from that rate, The remaining. These data are consistent with the concept of accelerated aging caused by radiation. By 1949, radiologists showed cancer death rates 10 years higher than other experts. In the cohort of 1950-1959 it was not enough age to prove the expected peak cancer mortality rate at the age group of 60-64 years. Several hypotheses have been proposed to present reasons for the differences in trends in age-specific cancer mortality through the registration cohort

Current mortality rate of radiologists and other physicians: all causes and death from cancer

Mortality or mortality is a measure of the number of deaths (generally or for specific reasons) in a particular population and is converted to the size of the population per unit of time. Because mortality is usually expressed in units of death per 1,000 people annually, the mortality rate of 9.5 (1 in 1000) in the population of 1000 is 9.5 deaths per year for the entire population, ie 0.95% of the total population I mean it. It is different from "incidence" which can be either the prevalence or incidence of disease (number of new cases per unit time).

The age-specific mortality rate per 100,000 people for reasons of use is affected by the age distribution of the population per 100,000 people. If the age distribution of the population is different, the overall mortality rate will differ for the two populations with the same age-specific mortality rate. Age-standardized mortality adjusts the age distribution differences of a population by applying the age-specific mortality observed for each population to the standard population. The definition of age-standardized mortality is the weighted average of age-specific mortality per 100,000 people, the weight of which is the proportion of the population of the corresponding age group in the WHO standard population. By age and sex