In a nearby town, two people had anxiety disorders in the past but not now. Three people developed anxiety disorders four or five years ago, and continue to have an anxiety disorder now. Six people developed anxiety disorders this year and continue to be

be so diagnosed. Which of the following might an epidemiologist write in her report concerning the rate of mental disorders in this community?

a. incidence (this year) = 5; lifetime prevalence = 6
b. incidence (this year) = 6; lifetime prevalence = 11
c. lifetime prevalence = 5; lifetime prevalence = 3
d. lifetime prevalence = 5; incidence (this year) = 11

Answer: b.