Researching quality of life in early old age: The importance of the sociological dimension

Measurement of quality of life has become a major feature of much social and epidemiological research in health and social care settings. It is seen as an important alternative to more process-based outcome measures but remains poorly defined. A major weakness is the absence of any coherent theoretical underpinning whether sociological, psychological or philosophical. Into this conceptual vacuum proxies for quality of life have been introduced. Quality of life [QoL] research into older populations has focused on measures of health and illness as equivalents of QoL. This paper argues that this response is inadequate as it reduces old age to a dimension of health, disability and disease. Instead, we argue that it is necessary to create a theoretically based measure of QoL in early old age which relates to those aspects of later life that are not defined by health. We present a model of QoL that is derived from aspects of contemporary social theory as they relate to the ontology of late modernity. In particular, we utilize a model based upon needs satisfaction. The model contains four domains: Control, Autonomy, Pleasure and Self-realization. The measure consists of a 19-item scale. The four domains load on to a single latent QoL factor. We argue that the CASP 19 scale offers an approach to QoL that integrates a sociologically based model of quality of life with a meaningful and valid research instrument.