Hennie Fisher|Marietjie Potgieter
The development, psychometric properties and refinement of a food literacy scale for specific and general application
University of Pretoria|University of Pretoria
food literacy continues developing concept need universal definition agreed subconstructs validated measuring instruments continues priority concept describes knowledge skills behaviours needed meet daily challenges face growing global noncommunicable diseases associated incorrect food behaviour research aims develop refine validate food literacy scale contextspecific general applications food literacy definitions subconstruct formulations reported elsewhere used guide development pool items n 204 research reports process refinement validation based combination ctt rasch modelling using results middleincome database population n 1657 sample n 862 application rasch analysis provided credible evidence quality psychometric properties instrument pragmatic decisions made items keep delete based qualitative considerations well comparison contrasting indicators derived statistical framework final instrument consisted 95 dichotomous items grouped six subscales namely procurement 11 items economics 9 items consumption 21 items nutrition 24 items food safety 17 items sociocultural aspects 13 items large item pool offers scope refinement upon implementation different contexts final scale modular meaning one subscales removed replaced implementation based excellent psychometric properties saflstm south african food literacy scale suitable measure food literacy middleincome consumers across many contexts