The study of British civil servants that compared mortality rates across four employment grades over a ten-year period is the Whitehall study.
It was the study to determine the social factors that affected the health of British civil servants. It included the study of prevalence or occurrence of diseases like cardiovascular diseases. It also included studies of the mortality rate.
This was done in two parts
Therefore, the study of British civil servants that compared mortality rates across four employment grades over a ten-year period is the Whitehall study.
Read more about the Whitehall study, here
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