13
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Differential Item Functioning in the Danish Translation of the SF-36

      , , , ,
      Journal of Clinical Epidemiology
      Elsevier BV

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Statistical analyses of Differential Item Functioning (DIF) can be used for rigorous translation evaluations. DIF techniques test whether each item functions in the same way, irrespective of the country, language, or culture of the respondents. For a given level of health, the score on any item should be independent of nationality. This requirement can be tested through contingency-table methods, which are efficient for analyzing all types of items. We investigated DIF in the Danish translation of the SF-36 Health Survey, using two general population samples (USA, n = 1,506; Denmark, n = 3,950). DIF was identified for 12 out of 35 items. These results agreed with independent ratings of translation quality, but the statistical techniques were more sensitive. When included in scales, the items exhibiting DIF had only a little impact on conclusions about cross-national differences in health in the general population. However, if used as single items, the DIF items could seriously bias results from cross-national comparisons. Also, the DIF items might have larger impact on cross-national comparison of groups with poorer health status. We conclude that analysis of DIF is useful for evaluating questionnaire translations.

          Related collections

          Author and article information

          Journal
          Journal of Clinical Epidemiology
          Journal of Clinical Epidemiology
          Elsevier BV
          08954356
          November 1998
          November 1998
          : 51
          : 11
          : 1189-1202
          Article
          10.1016/S0895-4356(98)00111-5
          9817137
          1d289806-cfec-4274-97a3-5f59fd6806c0
          © 1998

          https://www.elsevier.com/tdm/userlicense/1.0/

          History

          Comments

          Comment on this article