Psychometric properties of the Neuropsychiatric Inventory for adults with intellectual disability
Open Access
- 5 May 2020
- journal article
- research article
- Published by Wiley in Journal of Applied Research in Intellectual Disabilities
- Vol. 33 (6), 1210-1220
- https://doi.org/10.1111/jar.12741
Abstract
Background Problem behaviours are common among people with intellectual disabilities (ID), but psychometrically evaluated instruments for assessing such behaviours are scarce. The present study evaluated the psychometric properties of the Neuropsychiatric Inventory—Intellectual Disability (NPI‐ID). Method We assessed 108 residents with intellectual disabilities living in group‐homes using the NPI‐ID, which included the 12 symptoms of the original NPI‐Nursing Home and two supplementary symptoms: self‐injurious behaviour and impulsive risk‐taking behaviour. Results The NPI‐ID showed adequate internal consistency (α = 0.76) and test–retest reliability (intraclass correlation coefficient = 0.88). Exploratory factor analysis revealed five factors accounting for 64.1% of the variance. Cluster analysis revealed that residents were clustered in three groups with distinctly different symptom profiles. Conclusions The psychometric properties were satisfactory, supporting the use of the NPI‐ID as a screening tool for people with intellectual disabilities. Additional research is needed to further evaluate the utility of the NPI‐ID among people with intellectual disabilities.Keywords
Funding Information
- The Ministry of Health and Social Affairs, Sweden
This publication has 40 references indexed in Scilit:
- Psychiatric diagnoses in relation to severity of intellectual disability and challenging behaviors: a register study among older peopleAging & Mental Health, 2017
- Diagnostic and Statistical Manual of Mental DisordersPublished by American Psychiatric Association Publishing ,2013
- Outcome measurement for people with intellectual disability who present challenging behaviourAdvances in Mental Health and Intellectual Disabilities, 2010
- Reliability of the Brazilian Portuguese version of the Neuropsychiatric Inventory (NPI) for patients with Alzheimer's disease and their caregiversInternational Psychogeriatrics, 2007
- Neuropsychiatric symptoms in patients with Parkinson's disease and dementia: frequency, profile and associated care giver stressJournal of Neurology, Neurosurgery & Psychiatry, 2007
- Mental disorder in adults with intellectual disability. 1: Prevalence of functional psychiatric illness among a community‐based population aged between 16 and 64 yearsJournal of Intellectual Disability Research, 2001
- The Neuropsychiatric InventoryNeurology, 1997
- Depression in Adults with Intellectual Disability. Part 1: A ReviewAustralian & New Zealand Journal of Psychiatry, 1997
- The Neuropsychiatric InventoryNeurology, 1994
- Coefficient alpha and the internal structure of testsPsychometrika, 1951