Input (grade 13): A 1996-1999 survey of over 13,000 people reported a much higher figure, with almost 39% of people reporting hallucinatory experiences, 27% of which were daytime hallucinations, mostly outside the context of illness or drug use.
Output (grade 10): A recent survey of over 13,000 people reported a much higher figure. 27% of the people reported daytime hallucinations, mostly outside the context of illness or drug use.