Suicidal Ideation and Self-inflicted Injury in Medicare Enrolled Autistic Adults With and Without Co-occurring Intellectual Disability.
Adults with both autism and intellectual disability talk less about suicide yet try more often.
01Research in Context
What this study did
The team pulled Medicare records for 21,792 autistic adults.
They compared people with and without intellectual disability.
The goal was to see who had suicidal thoughts or self-injury.
What they found
Younger, white adults with depression had more suicidal thoughts.
Having intellectual disability lowered the chance of thoughts.
Yet the same group showed higher odds of actual attempts.
How this fits with other research
Chen et al. (2020) saw the opposite in kids. Higher autistic traits raised suicide risk in children. Age and ID status explain the flip.
Tsypes et al. (2026) add personality clues. Emotional lability and anhedonia best predict thoughts and attempts in autistic adults.
Tsai et al. (2023) confirm lethal risk. A whole Taiwan population showed more suicide deaths among autistic adults, backing up the danger N et al. flag.
Why it matters
You may miss suicidal thoughts in adults who also have ID because they report less. Watch for subtle signs and behavior changes. Pair your autism knowledge with depression screens. Add safety plans for anyone with ID plus recent stressors.
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02At a glance
03Original abstract
Suicidality is significantly more common in autistic adults than the general population, yet the factors that increase risk for suicidality among autistic adults remain largely unknown. We identified characteristics associated with suicidal ideation and suicide attempts/self-inflicted injury in a U.S. national sample of Medicare-enrolled autistic adults. We conducted a case-control study of autistic adults aged 18-59 years (n = 21,792). Younger age, white race, depression disorders, and psychiatric healthcare utilization were associated with increased odds of suicidal ideation and suicide attempts. Co-occurring intellectual disability was associated with significantly greater odds of a suicide attempt, but lower odds of suicidal ideation. Findings underscore the need for improved methods to identify ideation prior to attempt among adults with autism and intellectual disability.
Journal of autism and developmental disorders, 2020 · doi:10.1007/s10803-019-04345-x