Answer to Question 1
Incidence current number of cases in a given population
Prevalence rate at which new cases are identified
Examples could potentially identify if a particular disorder is being diagnosed at a higher rate due to a number of factors (e.g., environmental toxins, revised definitions, etc.); can compare prevalence to incidence to identify trends; can identify pockets of different disorders which could lead to possible etiology and where to focus prevention and treatment efforts
Answer to Question 2
C