MODEL-BASED CLUSTER ANALYSES OF COGNITION FOR UNPACKING SUBGROUP DIFFERENCES IN PSYCHOSOCIAL OUTCOMES

Abstract We forward a methodological approach, using model-based cluster analyses, and ambulatory assessments of cognition (2 indicators from each task), to derive subgroups of interest for tailored clinical follow-up in a longitudinal framework. Community dwelling adults were asked to complete 14 consecutive days of ecological momentary assessments (EMAs) using smartphones, including measures of cognitive performance, and self-reported physical and mental health outcomes (e.g., stress, memory complaints, depression, pain). A stable four-cluster solution emerged, labelled as: (1) a high-risk cognitive group (13%; most memory complaints, slowest performing, more memory errors); (2) subjective risk group (42%; highest levels of somatic and cognitive complaints); (3) normative aging (28%; intermediate cognitive performance -- speed/accuracy); (4) super-cognitive agers (17%; fastest speed, best memory). In conclusion, these findings highlight the potential of a cluster-based approach for risk classification, uncovering different profiles of poor performance that may represent different etiologies.

Download Full-text

Relations between memory complaints, depressive symptoms and cognitive performance among community dwelling elderly

Archives of Clinical Psychiatry (São Paulo) ◽

10.1590/0101-60830000000013 ◽

2014 ◽

Vol 41 (3) ◽

pp. 67-71 ◽

Cited By ~ 9

Author(s):

Lais Dos Santos Vinholi e Silva ◽

Thais Bento Lima da Silva ◽

Deusivania Vieira da Silva Falcão ◽

Samila Satler Tavares Batistoni ◽

Andrea Lopes ◽

...

Keyword(s):

Depressive Symptoms ◽

Cognitive Performance ◽

Community Dwelling ◽

Memory Complaints

Download Full-text

Multiple self-reported sleep measures are differentially associated with cognitive performance in community-dwelling nondemented elderly.

Neuropsychology ◽

10.1037/neu0000407 ◽

2018 ◽

Vol 32 (2) ◽

pp. 220-229 ◽

Cited By ~ 4

Author(s):

John P. K. Bernstein ◽

Matthew Calamia ◽

Jeffrey N. Keller

Keyword(s):

Cognitive Performance ◽

Community Dwelling

Download Full-text

Mobility in community-dwelling older adults; what are its determinants?

BMC Geriatrics ◽

10.1186/s12877-021-02174-1 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Wiebren Zijlstra ◽

Eleftheria Giannouli

Keyword(s):

Older Adults ◽

Methodological Approach ◽

Real Life ◽

Community Dwelling ◽

Specific Choice ◽

Mobility Studies ◽

Similarities And Differences ◽

Community Dwelling Older Adults ◽

Potential Mobility ◽

Present Understanding

Abstract Background Based on a conceptual framework, Kuspinar and colleagues analysed life-space mobility in community-dwelling older adults. However, a number of earlier mobility studies that used the same framework remained undiscussed. This correspondence article addresses similarities and differences between these studies, as well as highlight issues that need to be addressed to improve our understanding of mobility determinants in older adults. Findings Despite differences in methodological approach as well as in detailed results, the studies share one important outcome: regardless of the specific choice of potential mobility determinants, only a low to moderate proportion of mobility could be explained. Conclusions Our present understanding of the determinants of mobility in community-dwelling older adults is limited. A consistent terminology that takes into account the different aspects of mobility; the use of objective methods to assess real-life mobility; and monitoring changes in real-life mobility in response to interventions will contribute to furthering our understanding of mobility determinants.

Download Full-text

Owners’ Perceptions of Pet influence: Relation to Health Outcomes & Pet Attachment in Community-Living Older Adults

Innovation in Aging ◽

10.1093/geroni/igaa057.3398 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 926-926

Author(s):

Erika Friedmann ◽

Nancy Gee ◽

Eleanor Simonsick ◽

Barbara Resnick ◽

Erik Barr ◽

...

Keyword(s):

Older Adults ◽

Health Outcomes ◽

Negative Influence ◽

Community Dwelling ◽

Three Dimensions ◽

Psychological Status ◽

Physical And Mental Health ◽

Oblique Rotation ◽

Fiscal Health ◽

Pet Attachment

Abstract Pet ownership (PO) has been linked to better health outcomes in older adults, particularly those with chronic health conditions. It is suggested that pets influence their owners lives both by encouraging social interaction and by interfering with owners’ willingness or ability to seek care for themselves. We use data from 6 questions about the positive and negative influence of pets on community dwelling older adults’ administered to pet owners (N=223, age >=50 years) in the Baltimore Longitudinal Study of Aging. We use principal components analysis (oblique rotation) to extract dimensions of owner’s perceptions of pet influences (PPI) and examine the relationship of these dimensions to owners’ cognitive, physical functional, and psychological status. Three dimensions of PPI include: fiscal/health challenges (F1: 3 items, alpha=0.70), wellness promotion (F2: 2 items, alpha=0.80); and reason for social/travel constraints (F3: 1 item). In regression analysis with all factors entered simultaneously, after controlling for age, higher magnitude of F1 significantly independently predicted poor physical quality of life (p=.0007), greater perceived stress (p=0.041), and lower happiness (p=0.014); F2 did not independently predict any health outcome; higher F3 significantly independently predicted lower emotional vitality (p=0.048). Controlling for age, all three factors were independent predictors of pet attachment (p’s=0.001, 0.010, 0.047, respectively). F1 and F3 were positively and F2 was negatively correlated with attachment. PPI was associated with owners’ physical and mental health. Perhaps older adults with higher attachment to pets are more likely to keep them despite higher challenges.

Download Full-text

Bidirectional relationship between depressive symptoms and physical performance in community-dwelling older people with subjective memory complaints

European Geriatric Medicine ◽

10.1007/s41999-021-00473-9 ◽

2021 ◽

Author(s):

Eiko Takano ◽

◽

Mathieu Maltais ◽

Izumi Kondo ◽

Yves Rolland

Keyword(s):

Depressive Symptoms ◽

Older People ◽

Physical Performance ◽

Community Dwelling ◽

Subjective Memory Complaints ◽

Subjective Memory ◽

Memory Complaints ◽

Bidirectional Relationship ◽

Community Dwelling Older People

Download Full-text

Enhanced Cognitive Performance with Estrogen Use in Nondemented Community-Dwelling Older Women

Journal of the American Geriatrics Society ◽

10.1111/j.1532-5415.1999.tb05195.x ◽

1999 ◽

Vol 47 (10) ◽

pp. 1171-1175 ◽

Cited By ~ 61

Author(s):

David C. Steffens ◽

Maria C. Norton ◽

Brenda L. Plassman ◽

Jo Ann T. Tschanz ◽

Bonita W. Wyse ◽

...

Keyword(s):

Older Women ◽

Cognitive Performance ◽

Community Dwelling

Download Full-text

Improving enterprise’s competitiveness on the basis of combined ABC/XYZ and cluster analyses of the commodity nomenclature

Regional Economics Theory and Practice ◽

10.24891/re.19.9.1789 ◽

2021 ◽

Vol 19 (9) ◽

pp. 1789-1810

Author(s):

Mariya S. BELYAEVA

Keyword(s):

Methodological Approach ◽

Wine Industry ◽

Cluster Analyses ◽

Marketing Activities ◽

Differentiated Marketing ◽

Enterprise Competitiveness ◽

Business Structures ◽

The Relationship ◽

Enterprise's Competitiveness ◽

Similar Dynamic

Subject. This article examines the relationship between marketing activities and the development of entrepreneurial structures in Russia. Objectives. The article aims to develop a methodological approach that helps optimize the product nomenclature and develop differentiated marketing strategies for managing sales in different segments. Methods. For the study, I used the methods of ABC/XYZ and cluster analyses. Results. The article offers a methodological approach to the analysis of the nomenclature of goods, tested on the data of one of the business structures of the Crimean wine industry. It identifies goods nomenclature clusters that have similar dynamic characteristics for changes in sales volumes and demand predictability, and provides recommendations for increasing sales, margins, and improving enterprise competitiveness. Conclusions. The developed methodological approach can be considered as an element of information and methodological support for the enterprise competitiveness management system.

Download Full-text

The relationship between memory complaints and age in normal aging

Dementia & Neuropsychologia ◽

10.1590/s1980-57642009dn30200005 ◽

2009 ◽

Vol 3 (2) ◽

pp. 94-100 ◽

Cited By ~ 5

Author(s):

Thaís Bento Lima-Silva ◽

Mônica Sanches Yassuda

Keyword(s):

Older Adults ◽

Cognitive Decline ◽

Cognitive Performance ◽

Digit Span ◽

Normal Aging ◽

Screening Tests ◽

Memory Complaint ◽

Memory Complaints ◽

The Impact ◽

The Relationship

Abstract Normal aging can be characterized by a gradual decline in some cognitive functions, such as memory. Memory complaints are common among older adults, and may indicate depression, anxiety, or cognitive decline. Objectives: To investigate the association between memory complaints and age in cognitively unimpaired older adults, and the relationship between memory complaints and memory performance. Methods: Cognitive screening tests as well as memory complaint questionnaires validated for the Brazilian population were used: the Mini-Mental State Examination (MMSE), Geriatric Depression Scale (GDS), Memory Complaint Questionnaire (MAC-Q), Memory test of 18 pictures, Forward and Backward Digit Span (WAIS-III). Fifty seven regular members of the SESC social club participated (50 women), having a mean age of 71.4 years, and 4 to 8 years of education - 34 from 4 to 7 years and 23 with 8 years of education. Results: Results revealed no significant association between cognitive complaints and age or cognitive performance. Older participants in this sample did not show worse performance or a higher level of complaints. There was no significant association between age and GDS scores. Conclusions: The studied sample constitutes a particular group of older adults whose participation in activities may be protecting them from cognitive decline, thus highlighting the impact of lifestyle on cognitive performance during the aging process.

Download Full-text