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Looking across health and healthcare outcomes for people with intellectual and developmental disabilities and psychiatric disorders: population-based longitudinal study

Published: November 9, 2020
Category: Bibliography
Authors: Anna Durbin, Elizabeth Lin, Hannah Chung, Kristin Dobranowski, Robert Balogh, Tiziana Volpe, Yona Lunsky
Country: Canada
Language: English
Types: Care coordination, Population Health
Settings: Government, Health Plan, Province

Abstract

Background

Intellectual and developmental disabilities (IDDs) and psychiatric disorders frequently co-occur. Although each has been associated with negative outcomes, their combined effect has rarely been studied.

Aims

To examine the likelihood of five negative health and healthcare outcomes for adults with IDD and mental health/addiction disorders (MHAs), both separately and together. For each outcome, demographic, clinical and system-level factors were also examined.

Method

Linked administrative data-sets were used to identify adults in Ontario, Canada, with IDD and MHA (n = 29 476), IDD-only (n = 35 223) and MHA-only (n = 727 591). Five outcomes (30-day readmission, 30-day repeat ED visit, delayed discharge, long-term care admission and premature mortality) were examined by logistic regression models with generalised estimating equation or survival analyses. For each outcome, crude (disorder groups only) and complete (adding biosocial covariates) models were run using a general population reference group.

Results

The IDD and MHA group had the highest proportions across outcomes for both crude and complete models. They had the highest adjusted ratios for readmissions (aOR 1.93, 95%CI 1.88–1.99), repeat ED visit (aOR 2.00, 95%CI 1.98–2.02) and long-term care admission (aHR 12.19, 95%CI 10.84–13.71). For delayed discharge, the IDD and MHA and IDD-only groups had similar results (aOR 2.00 (95%CI 1.90–2.11) and 2.21 (95%CI 2.07–2.36). For premature mortality, the adjusted ratios were similar for all groups.

Conclusions

Poorer outcomes for adults with IDD, particularly those with MHA, suggest a need for a comprehensive, system-wide approach spanning health, disability and social support.

 

developmental disorders,intellectual disabilities,mortality,psychotic disorders,patients

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