For the record, I disagree with “delusional disorders being quite rare”; I believe D is somewhere between 0.5 and 0.8. Certainly, only 3% of these are “serious”, but I could fill a book with all of the ways people believe something that isn’t true.
What sort of beliefs are you talking about here? Are you classifying simply being wrong about something as a “delusional disorder”?
Exhibiting symptoms often considered as signs of mental illness. For example, this says 38.6% of general people have hallucinations. This says 40% of general people had paranoid thoughts. Presumably these groups aren’t exactly the same, so there you go: between 0.5 and 0.8 of the general population. You can probably pull together some more studies with similar results for other symptoms.
What sort of beliefs are you talking about here? Are you classifying simply being wrong about something as a “delusional disorder”?
Exhibiting symptoms often considered as signs of mental illness. For example, this says 38.6% of general people have hallucinations. This says 40% of general people had paranoid thoughts. Presumably these groups aren’t exactly the same, so there you go: between 0.5 and 0.8 of the general population. You can probably pull together some more studies with similar results for other symptoms.