Øystein Guttersrud|Jorån Østerholt Dalane|Sverre Pettersen
Improving measurement in nutrition literacy research using Rasch modelling: examining construct validity of stage-specific ‘critical nutrition literacy’ scales
University of Oslo|OsloMet – Oslo Metropolitan University|OsloMet – Oslo Metropolitan University
critical nutrition literacy cnl increasingly important area public health nutrition defined ability critically analyse nutrition information increase awareness participate action address barriers healthy eating behaviours far little attention paid establishing valid instruments measuring cnl aim present study assess appropriateness utilizing latent scales newly developed instrument assessing nursing students engagement dietary habits engagement scale level taking critical stance towards nutrition claims sources claims scaledata gathered distributing nineteenitem paperandpencil selfreport questionnaire university colleges offering nursing education study crosssectional design using rasch analysis data management analysis performed using software packages rumm2030 spss version 20school personnel handed questionnairesfour hundred seventythree students ten university colleges across norway responded 52 response ratedisordered thresholds rescored underdiscriminating item discarded one item showing uniform differential item functioning split assumption item locations differentiated stages strengthened analyses demonstrated possible dimension violations local independence claims scale data engagement scale could better targetedthe study demonstrates usefulness rasch analysis assessing psychometric properties scales developed measure cnl qualitative research designs could improve understanding cnl scales