The development and validation of a Spanish version of the quality of life in depression scale (QLDS)

Quality-of-life measurement in depression trials: A consumerist relic

Quality-of-life measurement in depression is advocated as a patient-centred indicator of recovery, but may instead enhance the mimetic authority of randomised controlled trials (RCTs) which have been roundly critiqued in mental health. In this paper we draw on the social life of methods approach to extend the well-developed critique of RCTs into the field of quality-of-life measurement. We accomplish this through consideration and critique of the conceptual and epistemological development of quality-of-life measurement in depression, including the role of psychometrics in its development. Examining conceptual developments from the 1970s onwards, we consider how the scientific literature on quality-of-life in depression aligns with behavioural economics and consumerism but falls short of engaging with genuinely patient-centred approaches to recovery. We argue that quality-of-life measures in depression were developed within a consumerist model of healthcare in which the medical model was a central pillar and 'choice' a rhetorical device only. While quality-of-life instrument development was largely funded by industry, psychometrics provided no coherent solution to the 'affective fallacy' (high correlations between quality-of-life and depressive symptoms). Industry has largely abandoned the measures, while psychotherapy research has increasingly endorsed them. We argue that in their design and implementation, quality-of-life measures for depression remain based on a commercial model of healthcare, are conceptually flawed and do not support concepts of patient-centred healthcare.

Evaluation of the psychometric properties of the Hungarian quality of life in depression scale

The paper describes the adaptation and psychometric evaluation of the Hungarian version of the quality of life in depression scale. The adaptation procedure involved: bilingual translation; field-testing for face and content validity; and assessment of instrument's reliability and construct validity. The new language version was shown to be well-accepted by respondents and to have excellent psychometric properties.

The California Health Interview Survey 2001: translation of a major survey for California's multiethnic population

The cultural and linguistic diversity of the U.S. population presents challenges to the design and implementation of population-based surveys that serve to inform public policies. Information derived from such surveys may be less than representative if groups with limited or no English language skills are not included. The California Health Interview Survey (CHIS), first administered in 2001, is a population-based health survey of more than 55,000 California households. This article describes the process that the designers of CHIS 2001 underwent in culturally adapting the survey and translating it into an unprecedented number of languages: Spanish, Chinese, Vietnamese, Korean, and Khmer. The multiethnic and multilingual CHIS 2001 illustrates the importance of cultural and linguistic adaptation in raising the quality of population-based surveys, especially when the populations they intend to represent are as diverse as California's.