Using machine learning to modify and enhance the daily living questionnaire

Abstract

The Daily Living Questionnaire (DLQ) constitutes one of a number of functional cognitive measures, commonly employed in a range of medical and rehabilitation settings. One of the drawbacks of the DLQ is its length which poses an obstacle to conducting efficient and widespread screening of the public and which incurs inaccuracies due to the length and fatigue of the subjects. Objective This study aims to use Machine Learning (ML) to modify and abridge the DLQ without compromising its fidelity and accuracy. Method Participants were interviewed in two separate research studies conducted in the United States of America and Israel, and one unified file was created for ML analysis. An ML-based Computerized Adaptive Testing (ML-CAT) algorithm was applied to the DLQ database to create an adaptive testing instrument—with a shortened test form adapted to individual test scores. Results The ML-CAT approach was shown to reduce the number of tests required on average by 25% per individual when predicting each of the seven DLQ output scores independently and reduce by over 50% when predicting all seven scores concurrently using a single model. These results maintained an accuracy of 95% (5% error) across subject scores. The study pinpoints which DLQ items are more informative in predicting DLQ scores. Conclusions Applying the ML-CAT model can thus serve to modify, refine and even abridge the current DLQ, thereby enabling wider community screening while also enhancing clinical and research utility.

Assessing Functional Cognition and Health During COVID-19 Pandemic: Gender Differences Among Community-Dwelling Adults

“…The DLQ is unique because respondents rate the cognitive challenges they experience when performing a range of tasks. Because even healthy people with high functioning levels may perceive some everyday tasks as more mentally challenging, 22 the DLQ is suited to assessing clinical populations with cognitive decline or healthy populations.…”

“…The Daily Living Questionnaire (DLQ) 22,23 is based on the dynamic interactional model, a highly efficient perspective for examining daily functional cognition. The DLQ assesses challenges that people with cognitive disabilities face in everyday functioning.…”