Validation of the Kimberley Cognitive Assessment (KICA‐Cog) for Torres Strait Islander Peoples

Abstract

ObjectivesThe aim of this study was to validate the Kimberley Indigenous Cognitive Assessment—Cognitive Component (KICA‐Cog) adapted for dementia screening in Torres Strait Islander Peoples.MethodsData were obtained from a broader dementia prevalence study completed in the Torres Strait and Northern Peninsula Area between 2015 and 2018. Modifications were made to items from the original KICA‐Cog to ensure they were culturally appropriate for the Torres Strait. All participants completed a KICA‐Cog and had a comprehensive dementia assessment with a geriatrician experienced in cross‐cultural assessment.ResultsA total of 255 Torres Strait residents aged 45 years and over completed a KICA‐Cog and underwent geriatric assessment. The adapted KICA‐Cog showed good validity for dementia diagnosis with a cut point of 33/34 associated with a sensitivity of 81% and specificity of 92% with an area under the ROC curve of 0.91.ConclusionsThe KICA‐Cog, when modified for the Torres Strait, is a valid cognitive screening tool for dementia. Caution is required when interpreting test scores, as the adapted KICA‐Cog had slightly lower sensitivity (ability to detect people with dementia) than the original KICA‐Cog. As with all short cognitive tests, individuals with a low KICA‐Cog scores should undergo further medical investigations before a dementia diagnosis is considered.