AP PSYCHOLOGY

Detailed explanation-1: -Schizophrenia affects approximately 24 million people or 1 in 300 people (0.32%) worldwide. This rate is 1 in 222 people (0.45%) among adults (2). It is not as common as many other mental disorders.

Detailed explanation-2: -In India, where about 1.1 billion people reside, the prevalence of schizophrenia is about 3/1000 individuals (Gururaj, Girish, & Isaac, 2005). It is more common in men, and in terms of age of onset, men tend to be younger by an average of about five years than women when they develop schizophrenia.

Detailed explanation-3: -Schizophrenia is a disorder with a relatively low prevalence. A systematic review conducted by Saha et al5 demonstrated a median population period prevalence of 3.3 per 1000.

Detailed explanation-4: -Schizophrenia affects just under 1% of the population at some point in their life. Perhaps the most comprehensive study to demonstrate this comes from Finland; Perala et al estimated lifetime prevalence, according to DSM-IV criteria, at 0.87% for schizophrenia, and 0.32% for schizoaffective disorder.