Abstract
BackgroundFew studies have addressed health-related quality of life in community-dwelling individuals aged 80 years and above and very few self-assessment quality of life questionnaires have been formally validated in these populations. This study aimed to validate a French version of the LEIPAD, a self-administered questionnaire assessing the health-related quality of life of people aged 80 years and over.MethodA cross-sectional study of people aged 80 years and over living at home in France was conducted. All subjects recruited were sent a letter explaining the study and requesting their consent to take part. Those who accepted then received the questionnaires, including the LEIPAD, which assesses health-related quality of life in the subjects aged 65 years and above. We assessed its psychometric properties: data completeness, score distribution, floor and ceiling effects, internal consistency, item-total correlations, inter-scale correlations, reliability and convergent validity with the Medical Outcome Study Short-Form 36 (SF-36).ResultsThe results obtained from 184 older people (mean age of 83.9 years, standard deviation 3.3) showed very good acceptability (missing data between 1.1% and 11.4% for LEIPAD scales) Factor analysis of the instrument confirmed the multi-dimensional structure in seven independent scales similar to the original version. Good internal consistency (Cronbach’s alpha ranging from 0.68 to 0.87) and strong test-retest reliability of the LEIPAD scales (intraclass correlation coefficients ranging from 0.77 to 0.95) were found. Convergent validity with the SF-36 showed moderate to strong correlations, consistent with the hypotheses stated.ConclusionsThe validation of this specific questionnaire will make it possible to investigate individually the health-related quality of life of French older people living at home and will enable French-speaking investigators to contribute to national and international research projects.
Highlights
The world’s population is ageing in virtually every country, a trend that is even more pronounced in Europe
This study aimed to validate a French version of the LEIPAD, a self-administered questionnaire assessing the health-related quality of life of people aged 80 years and over
The results obtained from 184 older people showed very good acceptability Factor analysis of the instrument confirmed the multi-dimensional structure in seven independent scales similar to the original version
Summary
The world’s population is ageing in virtually every country, a trend that is even more pronounced in Europe. The LEIPAD, an acronym deriving from the first two of the three universities involved in its development (LEIden in the Netherlands and PADua in Italy) is a questionnaire especially designed in 1998 in English for self-assessment of HRQoL for community–dwelling subjects aged 65 years and above [6] It was developed by the European office of WHO, with the aim of providing an instrument that could be used in clinical assessment, and that could be applied to different cultural settings. This study aimed to validate a French version of the LEIPAD, a self-administered questionnaire assessing the health-related quality of life of people aged 80 years and over
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