New research released this month about the prevalence of body-focused repetitive behaviors (BFRBs) suggests that these disorders are more common than previous research stated.
Prevalence? What’s prevalence?
Prevalence is a term used in epidemiology to describe a proportion of a population that has a condition. Mostly, it refers to the commonality of something. The numbers usually represent a fraction of a percentage of cases per 100,000 people but are specific to a given period.
While prevalence often suggests that the percentage provided is a real number, it is based on a sample population. Sample populations are smaller versions of the entire population which mean that even if there is the prevalence of 10% indicated for a condition, it does not mean that 10% of people have it. Instead, it means 10% of a sample population has it which implies that percentage reflects the general population.