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- W2169263344 abstract "Health Related Quality of Life (HrQoL) is a latent variable, indirectly observed through individual responses to a set of questions (items) forming the HrQoL questionnaire. The first part of the paper is about its measurement which remains a complex issue. This measurement process is done via instruments (questionnaires) which are validated through the intermediary of some fundamental models, mainly based on unidimensionality principle and some specific conditional independence properties. We explain how these measurement models are statistically validated, and how measurements they provide must be statistically analyzed in studies involving other external variables. Finally, a few important recent issues in the field are presented.Keywords:Cronbach Alpha;Health related Quality of life;Item Response Theory;Joint Analysis of Quality of Life and Survival;Latent variable;Longitudinal data analysis;mixed model;Patient Reported Outcomes (PRO);Rasch model;Unidimensionality" @default.
- W2169263344 created "2016-06-24" @default.
- W2169263344 creator A5080495344 @default.
- W2169263344 date "2014-11-17" @default.
- W2169263344 modified "2023-09-24" @default.
- W2169263344 title "Statistical Quality of Life" @default.
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- W2169263344 doi "https://doi.org/10.1002/9781118445112.stat00186" @default.
- W2169263344 hasPublicationYear "2014" @default.
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