Associations between functional ability and life satisfaction in the oldest old: results from the longitudinal population study Good Aging in Skane

Objectives: To describe change in functional ability in the oldest-old population during 3 years and examine its relation to life satisfaction (LS). A total of 681 individuals aged 78 and older from the population-based study Good Aging in Skane took part. Methods: Functional ability was assessed using Sonn and Asberg's Activities of Daily Living (ADL) scale and related to LS assessed by Neugarten et al's Life Satisfaction Index A (LSI-A). Results: Fifty-one percent of 87-93-year-olds reported ADL decline during 3 years. Individuals reporting impaired ADL had a mean LSI-A value of 23.0 compared to 26.4 in those unchanged. ADL decline had a stronger negative effect on LS in the younger group (78-84 years), r = 0.207, P < 0.001. In a multiple regression model, one score's decline in ADL capacity corresponded to 1.5 scores lower LS (P < 0.001). Discussion: Effort put into keeping the oldest old on a high level of functional ability has the potential to maintain the LS of this population