Discuss how epidemiology is used to study mental health problems. What is epidemiology? How do prevalence rates, lifetime prevalence rates, and incidence rates differ from one another?
What will be an ideal response?
At a minimum, answers should define epidemiology as the study of the extent and
type of illnesses within populations as well as the factors that impact their distribution.
Such studies may investigate the prevalence, incident, or lifetime prevalence rates of
various illnesses or conditions. Both prevalence and lifetime prevalence rates measure
the number of existing cases of a disorder. Prevalence rates refer to the number of
existing cases in a defined population during a specified time period. Lifetime
prevalence rates are the number of existing cases during the person’s lifetime.
Incidence refers to new cases. Incidence rates refer to the number of new cases of a
disorder in a defined population during a specified time period of observation.
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