Definition of the construct to be measured is a prerequisite for the assessment of validity. The Neck Disability Index as an example.

L. Ailliet, D.L. Knol, S.M. Rubinstein, H.C.W. de Vet, M.W. van Tulder, C.B. Terwee

Research output: Contribution to journalArticleAcademicpeer-review

Original languageEnglish
Pages (from-to)775-782
JournalJournal of Clinical Epidemiology
Issue number7
Publication statusPublished - 2013

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