Unidimensionality and reliability under Mokken scaling of the Dutch language version of the SF-36

article




Heijden, P.G.M. van der

Buuren, S. van

Fekkes, M.

Radder, J.

Verrips, E.
The sub-scales of the SF-36 in the Dutch National Study are investigated with respect to unidimensionality and reliability. It is argued that these properties deserve separate treatment. For unidimensionality we use a non-parametric model from item response theory, called the Mokken scaling model, and compute the corresponding scalability coefficients. We estimate reliability under the Mokken model, assuming that the items are double homogeneous, and compare it to Cronbach's α. The scalability of the sub-scale general health perceptions is medium (H = 0.46), and for the other sub-scales it is strong (H ≥ 0.6). The reliability in terms of α indicates that all sub-scales can be used in basic research (α > 0.70), but that only physical functioning can be used for clinical applications of quality of life (α > 0.90). The relative merits of our approach are discussed.
Topics





















Item response theoryMokken scaling modelReliabilityScalabilitySF-36AdultCalculationControlled studyCorrelation coefficientLanguageMedical researchModelPerceptionRating scaleHumansModels, StatisticalNetherlandsQuality of LifeQuestionnairesReproducibility of ResultsSickness Impact ProfileTranslating
TNO Identifier
236998
Repository link
https://resolver.tno.nl/uuid:b35b226c-0024-4680-8b78-b2b178f915b4
ISSN
09629343
Source
Quality of Life Research, 12(2), pp. 189-198.
Pages
189-198
Files
To receive the publication files, please send an e-mail request to TNO Repository.