The dimensional structure of the MacNew Health Related Quality of Life questionnaire: A Mokken Scale Analysis

Our results generally support the use of the MacNew Global score, with the limitation, that five items may be questionable with regard to scalability. On the level of unidimensional subscales MSA suggests to differentiate between a six-item restriction scale and a ten-item emotional scale. The study demonstrates that Mokken Scale Analysis complements the results of factor analysis and can contribute to a more comprehensive understanding of the dimensional structure of Health-related Quality of Life questionnaires.