Worry about Performance: Unravelling the Relationship between 'Doing More' and 'Doing Better'

OBJECTIVE

Recent studies have described worry about caregiver performance (WaP) as a distinct dimension of caregiver burden. We aimed to explore care recipient and caregiver characteristics between the concordant and discordant WaP groups in a population of caregivers of older adults with cognitive impairment. The secondary objective is to explore if there are differences between high and low WaP subsets in the 'doing more' and 'doing better' groups.

DESIGN, SETTING AND PARTICIPANTS

This is a retrospective study of 936 dyads of community-dwelling older adults with cognitive complaints and their primary family caregiver from a hospital in Singapore.

MEASUREMENTS

We performed descriptive and inferential statistics of the characteristics of caregivers and patients. We categorized caregiver-patient dyads into four groups, namely concordant (high vs low WaP) and discordant ('doing more' vs 'doing better') groups. For both concordant and discordant groups, we further defined low and high WaP subgroups using tertile cutoffs.

RESULTS

The concordant low WaP group is predicted by the spousal relationship (p<.001) and care recipients with fewer neuropsychiatric symptoms (p<.001). There is no significant difference between the discordant groups, which were predominantly the adult children. Further analysis of subgroups found that in the 'doing better' group, there were more spouses in the high as compared to low WaP subgroups, with the reverse true in the 'doing more' group. In the 'doing more' group, caregivers with high WaP also had higher total ZBI (p<0.05) with higher factors (F1, F2 and F3) scores (p<0.05). They also endorsed higher NPI-Q scores (p=0.045) particularly in the domain of depression / dysphoria (p=0.034). These differences are not seen in the 'doing better' group.

CONCLUSION

Our study suggests an association with caregiver characteristics (adult child) and disruptive behavior in the 'do more' high WaP discordant group. Delineating into the high and low WaP subgroups can help us identify the 'do more' high WaP subgroup that merits further attention and early intervention.

Frontal Assessment Battery in Early Cognitive Impairment: Psychometric Property and Factor Structure

BACKGROUND

The Frontal Assessment Battery (FAB) is a reliable and valid bedside tool for testing executive function in dementia. Given the increasing interest in utility of FAB as a screening tool in early cognitive impairment (ECI), there is a surprising lack of studies evaluating its psychometric property and factor structure, nor the influence of factors such as age, education and gender, in ECI.

OBJECTIVES

This study aims to investigate the psychometric properties and factor structure of FAB in older adults with ECI, as well as the influence of age, gender and education.

DESIGN, SETTING AND PARTICIPANTS

This is a retrospective, observational cross-sectional study with 300 community dwelling, predominantly Chinese older adults (14 normal, 130 mild cognitive impairment (MCI), and 156 mild dementia) who presented to Memory Clinic from January 2011 to December 2013. Measurements and Analysis: We collected data on demographic, cognitive, functional and behavioral evaluation. To examine the psychometric properties of FAB, we examined the concurrent, convergent, and discriminant validity; internal consistency by Cronbach's alpha; and factor structure by exploratory factor analysis. The influence of age, education and gender was examined using unadjusted and adjusted correlational analyses with CDR-SOB. We performed analysis for the whole group and for MCI subgroup.

RESULTS

FAB total score decreases significantly from normal to dementia group attesting to concurrent validity. It correlated significantly with digit span backwards and Chinese Mini Mental State Examination (r=0.38 and 0.47 respectively, p<0.01) and poorly with Neuropsychiatric Inventory-Questionnaire and depression (r=0.004 and -0.02 respectively), supporting its convergent and discriminant validity. Factor analysis yielded a single-factor solution for FAB with fair Internal consistency (alpha=0.610). FAB is relatively unaffected by age, gender and education level. These good psychometric properties extend to MCI, albeit with greater influence by education level. FAB items of conceptualization and mental flexibility have good discriminatory ability between MCI and normal subjects.

CONCLUSION

FAB has good concurrent, convergent and discriminant validity with fair internal consistency in ECI that is premised on a one-factor structure. It is relatively unaffected by age, gender or education. Taken together, FAB is a useful bedside screening tool for executive function in ECI.