Prevalence of psychotropic medication and factors associated with antipsychotic treatment in adults with intellectual disabilities: a cross-sectional, epidemiological study in Germany.
Half of German adults with ID take antipsychotics, echoing older Nordic data, but new UK work shows staff training can cut doses fast.
01Research in Context
What this study did
Researchers asked 197 German adults with intellectual disability about their medicines. They wanted to know how many take psychotropics and why doctors chose them.
The team used a one-time survey. They looked at living place, autism diagnosis, and challenging behavior as possible links to drug use.
What they found
More than half of the adults were on at least one psychotropic drug. Antipsychotics were the most common, used by 44 % of the group.
People in residential homes, those with autism, and those showing challenging behavior were more likely to receive these drugs.
How this fits with other research
Heald et al. (2020) found almost the same pattern in a total population. Their numbers were a bit lower, but the risk factors matched: residential living and psychiatric history.
Bø̸rge et al. (2004) saw the same problem in Norway years earlier. Doctors often gave psychotropics without a clear diagnosis or review.
Agiovlasitis et al. (2025) in the UK added hope. After brief staff training, twice as many adults had their antipsychotic dose reduced. The German snapshot shows we still need that training.
Why it matters
If you serve adults with ID, expect every other client to be on an antipsychotic. Ask for the behavior plan before you accept 'it keeps him calm.' Share the UK training data with prescribers and push for a functional assessment. Your notes on behavior can be the evidence needed to taper or stop the drug.
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02At a glance
03Original abstract
BACKGROUND: Mental health services in people with intellectual disabilities (ID) are frequently limited to psychotropic medication (PM), especially antipsychotics. The objectives of this study were to assess the prevalence rates of PM treatment in adults with ID in Germany and to identify factors associated with antipsychotic treatment. METHODS: This study is an epidemiological, cross-sectional study. Sampling was realised by a random selection of service-providing institutions, followed by a random selection of adults with ID within these participating institutions. Interviews were conducted with formal and informal carers of n = 197 adults with ID. Data were analysed using descriptive statistics and risk ratios. RESULTS: The 4-week prevalence rate of PM was 53.8%. Antipsychotics were the most frequent PM (43.7%). Polypharmacy and off-label use were common. Antipsychotic treatment is associated with living in a residential home [relative risk (RR) = 2.99], not working in a sheltered workshop (RR = 1.46), autism spectrum disorder (RR = 1.89), a documented psychiatric diagnosis (RR = 1.61), psychiatric symptomatology (RR = 1.44) and (mild) challenging behaviours (RR = 4.58). CONCLUSIONS: Further efforts are needed to provide adequate mental health care, specifically to improve PM treatment regarding amount, indication and the consideration of non-psychopharmacological treatment options.
Journal of intellectual disability research : JIDR, 2021 · doi:10.1111/jir.12802