The independent living scale in amnestic mild cognitive impairment: Relationships to demographic variables and cognitive performance.

INTRODUCTION

The Independent Living Scales (ILS) is an objective measure of day-to-day functioning, which can be used to aid in diagnosing dementia in older adults with cognitive impairments. However, no studies have examined this measure in individuals with Mild Cognitive Impairment (MCI), a prodromal phase of dementia.

METHOD

Therefore, we sought to examine three subscales of the ILS (Managing Money, Managing Home and Transportation, Health and Safety) in a sample of 132 individuals with amnestic MCI, focusing on the relationship of the ILS with demographic variables (age, education, sex) and cognitive abilities (assessed with the Repeatable Battery for the Assessment of Neuropsychological Status [RBANS]).

RESULTS

This MCI sample showed intact daily functioning on the three ILS subscales. In a series of three, separate hierarchical linear regression models, the Managing Money, Managing Home and Transportation, and Health and Safety subscales were all significantly related to demographic variables, and the RBANS Total Scale score significantly added to all models. These models would also allow one to predict an ILS score based on demographic and cognitive data, which could be compared to an observed ILS score to see if it meets expectations.

CONCLUSIONS

Overall, these results indicate that daily functioning, as measured with the ILS, is related to cognitive abilities in amnestic MCI, and that demographic variables also influenced ILS scores in this cohort. Although the ILS may be appropriate for identifying functional abilities in MCI, the consideration of these moderating variables seems necessary.