Incidence Data Are Especially Helpful for What Purposes? (Select All

Incidence data are especially helpful for what purposes? (Select all that apply.)

A) Evaluating treatments that prolong life
B) Measuring the rate of new illnesses in a population
C) Assessing risks associated with particular illnesses
D) Determining health care personnel needs
E) Illustrating whether interventions are effective
F) Planning health care services and facilities