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Psychiatr Serv. 2018 Mar 1;69(3):353-357. doi: 10.1176/ Epub 2017 Nov 15.

All-Cause, 30-Day Readmissions Among Persons With Intellectual and Developmental Disabilities and Mental Illness.

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Dr. Balogh and Ms. Dobranowski are with the University of Ontario Institute of Technology, Oshawa, Ontario, Canada. Dr. Lin, Ms. Selick, and Dr. Lunsky are with the Centre for Addiction and Mental Health, Toronto. Mr. Wilton is with the Institute for Clinical Evaluative Sciences, Toronto.



Early hospital readmissions within 30 days of discharge are common and costly. This research describes predictors of all-cause, 30-day hospital readmissions among persons with intellectual and developmental disabilities (IDD), a group known to experience high rates of hospitalization.


A cohort of 66,484 adults with IDD from Ontario, Canada, was used to create two subgroups: individuals with IDD only and those with IDD and mental illness. The rates of hospital readmission were determined and contrasted with a comparison subgroup of people without IDD who have mental illness.


Compared with those with mental illness only, individuals with IDD and mental illness were 1.7 times more likely to experience a hospital readmission within 30 days. Predictors of their readmission rates included being a young adult and having high morbidity levels.


The high rate of hospital readmission suggests that individuals with IDD and mental illness need attention regarding discharge planning and outpatient follow-up.


developmental disabilities; hospitalization; intellectual disabilities; mental illness; patient readmission


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