Prevalence of Psychotropic Use and Psychotropic Polypharmacy in a Finnish National Cohort of Persons With Intellectual Disabilities.

Prevalence of psychotropic use was higher in the intellectual disability cohort (42.3%) than comparison cohort (15.0%).

Antipsychotics were the most common psychotropic group in the intellectual disability cohort (28%), with lower prevalence in the comparison cohort (3.3%).

The prevalence of antidepressant use was 19.4% in the intellectual disability cohort and 9.7% in the comparison cohort.

A likely indication was identified for 52.9% of psychotropic users with intellectual disability (major psychiatric comorbidity 38.1%, challenging behaviour 22.1%).