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  • Book
    Peter M. Fayers and David Machin.
    Digital : Wiley2016
    Principles of measurement scales -- Developing a questionnaire -- Scores and measurement : validity, reliability, sensibility -- Multi-item scales -- Factor analysis and structural equation modelling -- Item response theory and differential item functioning -- Item banks, item linking, and computer-adaptive tests -- Choosing and scoring questionnaires -- Clinical trials -- Samples sizes -- Cross-sectional analysis -- Exploring longitudinal data -- Modelling longitudinal data -- Missing data -- Practical and reporting issues -- Death and quality-adjusted survival -- Clinical interpretation -- Biased reporting and response shift -- Meta-analysis.