Terrence Howard plays a music mogul in a new series on Fox. CHICAGO â In the presidential suite of a Hilton hotel, above a ballroom full of extras waiting to shoot a lavish party scene, sat the two lead actors of âEmpire,â a new Fox series about a feuding entertainment-industry family.
Prevalence is a statistical concept referring to the number of cases of a disease that are present in a particular population at a given time, whereas incidence refers to the number of new cases that develop in a given period of time.
The terms incidence and prevalence refer to the number of people who have a particular medical condition. Incidence means the number of people who are newly diagnosed with a condition, while prevalence includes newly diagnosed people, plus people who were diagnosed in the past, and, if the information is obtainable, people who haven't been diagnosed.