EHS 260 Lecture Notes - Lecture 24: Retrospective Cohort Study, Cohort Study, Mortality Rate
11 May 2016
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Document Summary
This chapter attempts to answer this question, based on evidence from epidemiological cohort studies which have addressed all cause mortality, that is death from any cause. Studies that have examined the link between activity/fitness and specific causes of death such as cardiovascular disease will be covered in chapters. Do n"t answer the question of why do active/fit people live longer than inactive/unfit people? . Limited info. linked physically active occupations to longevity in the 18 th and 19th centuries. Results: lower mortality rates in section men (active) vs. clerks and switchmen (inactive) The relationship between occupation and mortality risk was simply due to self-selection, that is, men who were in the process of developing chronic diseases (and therefore likely to die prematurely) might have chosen physically less demanding jobs. Other characteristics predictive of mortality: smoking, diet, obesity, were not accounted for. Leisure-time physical activity was not measured and thus there was not clear assessment of total pa.
