  In order to face food insecurity as a global phenomenon, it is essential to
rely on measurement tools that guarantee comparability across countries.
Although the official indicators adopted by the United Nations in the context
of the Sustainable Development Goals (SDGs) and based on the Food Insecurity
Experience Scale (FIES) already embeds cross-country comparability, other
experiential scales of food insecurity currently employ national thresholds and
issues of comparability thus arise. In this work we address comparability of
food insecurity experience-based scales by presenting two different studies.
The first one involves the FIES and three national scales (ELCSA, EMSA and
EBIA) currently included in national surveys in Guatemala, Ecuador, Mexico and
Brazil. The second study concerns the adult and children versions of these
national scales. Different methods from the equating practice of the
educational testing field are explored: classical and based on the Item
Response Theory (IRT).
