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Occupational complexity and cognition in the FINGER multidomain intervention trial.

Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden. Aging Research Center, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden. Institute of Gerontology, School of Health and Welfare, Aging Research Network - Jönköping (ARN-J), Jönköping University, Jönköping, Sweden. Department of Public Health Solutions, Public Health Promotion Unit, Finnish Institute for Health and Welfare, Helsinki, Finland. Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland. The Ageing Epidemiology Research Unit, School of Public Health, Imperial College London, London, UK. Center for Life Course Health Research/Geriatrics, University of Oulu, Oulu, Finland. Medical Research Center Oulu, Oulu University Hospital and Oulu City Hospital, Oulu, Finland. Neurocenter/Neurology, Kuopio University Hospital, Kuopio, Finland. Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland. Hospital District of North Karelia, Joensuu, Finland. Work Ability and Working Careers, Finnish Institute of Occupational Health, Helsinki, Finland. Department of Welfare; Ageing, Disability and Functioning Unit, Finnish Institute for Health and Welfare, Helsinki, Finland. Department of Social and, Psychological Sciences, Karlstad University, Karlstad, Sweden. University of Helsinki, Clinicum, and Helsinki University Hospital, Helsinki, Finland. South Ostrobothnia Central Hospital, Seinäjoki, Finland. Department of Public Health, University of Helsinki, Helsinki, Finland. Diabetes Research Group, King Abdulaziz University, Jeddah, Saudi Arabia. Theme Aging, Karolinska University Hospital, Stockholm, Sweden.

Alzheimer's & dementia : the journal of the Alzheimer's Association. 2022;(12):2438-2447
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Abstract

INTRODUCTION Lifetime exposure to occupational complexity is linked to late-life cognition, and may affect benefits of preventive interventions. METHODS In the 2-year multidomain Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER), we investigated, through post hoc analyses (N = 1026), the association of occupational complexity with cognition. Occupational complexity with data, people, and substantive complexity were classified through the Dictionary of Occupational Titles. RESULTS Higher levels of occupational complexity were associated with better baseline cognition. Measures of occupational complexity had no association with intervention effects on cognition, except for occupational complexity with data, which was associated with the degree of intervention-related gains for executive function. DISCUSSION In older adults at increased risk for dementia, higher occupational complexity is associated with better cognition. The cognitive benefit of the FINGER intervention did not vary significantly among participants with different levels of occupational complexity. These exploratory findings require further testing in larger studies.

Methodological quality

Publication Type : Clinical Trial

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