Methodological Issues in Advancing the Status of Functional Cognitive Assessment

Many individuals in acute hospital and post-acute care settings experience changes in their capacity to perform complex activities of daily living associated with deficits in functional cognition. Occupational therapists regularly assess and treat these occupational performance deficits. The construct of functional cognition offers oportunities for occupational therapists to define an approach to cognition that is both distinct from that of other disciplines and that supports evidence-based interventions. This article provides a rationale for performance-based assessment of functional cognition and an overview of the methodological issues associated with the development and implementation of reliable and valid screening and comprehensive asseements of functional.

Cognition in the first week after stroke: how does it relate to personal and instrumental activities of daily living at follow-up?

Background:

The Montreal Cognitive Assessment (MoCA) is routinely used during the early assessment of people after stroke to indicate cognitive effects and inform clinical decision-making.

Aim:

The purpose of this study was to examine the relationship between cognition in the first week post-stroke and personal and instrumental activities of daily skills at 1 month and 3 months post-stroke.

Method:

A prospective cohort study consecutively recruited people admitted to the acute stroke ward. Acute cognitive status was measured using the MoCA within 1 week post-stroke onset. Functional outcomes were measured using the Functional Independence Measure (FIM) and the Australian Modified Lawton’s Instrumental Activities of Daily Living Scale (Lawton’s) at 1 month and 3 months post-stroke.

Results:

Fifty participants with predominantly mild stroke (n = 47) and mean age of 69.8 achieved a mean MoCA score of 23.1. Controlling for age, the MoCA was associated with the overall FIM score at 1 month (P = 0.02). It was nearing significance for the Lawton’s at 1 month (P = 0.06) but was not associated with either outcome at 3 months. A score of less than 23 on the MoCA was indicative of lower scores on both outcomes.

Conclusions:

A low MoCA score within 1 week of stroke may indicate need for support or rehabilitation due to early impacts on personal activities of daily living, but is not associated with poor functional outcomes at 3 months.

Stroke survivors’ occupational performance and cognitive strategy use: A pilot exploration of strengths and difficulties using the Perceive Recall Plan Perform System of Task Analysis

Introduction

The Perceive Recall Plan Perform System of Task Analysis is an ecological assessment of occupational performance and cognitive strategy application. This study aimed to describe occupational performance and cognitive strategies of stroke survivors in an early supported discharge service, compare the assessment with global measures of function and evaluate the feasibility of implementing the assessment in the early supported discharge setting.

Method

This study was a pilot study design and used consecutive sampling. Participants were assessed with the Perceive Recall Plan Perform System of Task Analysis and two global measures: the Functional Independence Measure and the Australian Modified Lawton’s Instrumental Activities of Daily Living Scale. Scores from the Perceive Recall Plan Perform System of Task Analysis were analysed by task mastery, sub-quadrants and quadrants, and correlations between the assessment and global measures were examined.

Findings

In this cohort ( n = 10), the Perceive Recall Plan Perform System of Task Analysis assessment required 47 minutes per task and identified reduced task mastery (mean = 55%, SD = 10%) with common difficulties in the perceive and plan domains. High to moderate correlations were identified between the plan quadrant and global measures ( p < 0.05).

Conclusion

Perceive Recall Plan Perform System of Task Analysis assessment can be successfully implemented by occupational therapists with stroke survivors receiving early supported discharge to measure occupational performance and identify strengths and difficulties in cognitive strategy application.

A Meta-Analysis of Neuropsychological Predictors of Outcome Following Stroke and Other Non-Traumatic Acquired Brain Injuries in Adults

A number of cognitive abilities have been reported to predict outcome following a non-traumatic acquired brain injury (ABI) in adults. However, the results are inconsistent. Furthermore, the unique and combined capacity of these cognitive abilities to predict ABI outcome has not been evaluated. Consequently, we employed meta-analysis and multiple regression to evaluate the capacity of various neuropsychological domains to predict two separate outcome variables in adults: (1) activities of daily living; and (2) quality of life. Based on the activities of daily living meta-analysis (N = 2384), we estimated the following significant bivariate effects: memory (r = .31, 95% CI: .20/.41]), language (r = .33, 95% CI:.26/.40), attention (r = .38, 95% CI: .30/.46]), executive functions (r = .29, 95% CI: .19/.39]), and visuospatial abilities (r = .41, 95% CI: .34/ .48). Based on the quality of life meta-analysis (N = 1037), we estimated the following significant bivariate effects: memory (r = .12, 95% CI: .03/.20]), language (r = .19, 95% CI: .06/ .32), attention (r = .30, 95% CI: .16/.44]), executive functions (r = .24, 95% CI: .12/.37) and visuospatial/constructional abilities (r = .30, 95% CI: .14/.46). Meta-analytic structural equation modelling (metaSEM) identified two significant, unique predictors of activities of daily living, attention and visuospatial abilities, and the model accounted for 21% of the variance (multiple R² = .21, 95%CI: .16/.26). For the corresponding quality of life metaSEM, no statistically significant unique predictors were identified, however, a significant multiple correlation was observed, multiple R² = .11 (95%CI: 04/.18). We conclude that practitioners may be able to predict, with some degree of accuracy, functional outcome following a stroke and other non-traumatic ABI in adults. We also provide some critical commentary on the nature and quality of the measures used in this area of research to represent the cognitive dimensions of interest.

Psychometric properties of cognitive screening for patients with cerebrovascular diseases A systematic review

Screening instruments are ideal for acute clinical settings because they are easy to apply, fast, inexpensive and sensitive for specific samples. However, there is a need to verify the psychometric properties of screening in stroke patients.

Objective

This study investigated the psychometric properties (methodological procedures) of cognitive screening for patients with cerebrovascular diseases.

Methods

A systematic review of papers published on PsycINFO, Web of Knowledge, PubMed and Science Direct (2005 to 2016) was performed.

Results

A total of 55 articles remained after applying exclusion criteria. The samples ranged from 20 to 657 patients. Most articles evaluated elderly individuals with four to 13 years of education who had experienced ischemic or hemorrhagic stroke. There was a tendency to find evidence of validity for criteria and to analyze the sensitivity/specificity of the instruments. Although the studies frequently used the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) to seek evidence of validity and reliability, the use of these instruments among stroke patients has been criticized due to their psychometric properties and the neuropsychological functions evaluated.

Conclusion

Although there is no gold standard screen for assessing adults post-stroke, instruments devised specifically for this population have shown promise. This review helps both researchers and clinicians to select the most appropriate screen for identifying cognitive impairment in adults post-stroke.