The subnational global hunger index (GHI-SN) is derived from the global hunger index as a simple indicator to compare hunger status at each subnational level and monitor health program achievement concerning the global target. The purpose of this objective study is to ensure the validity and reliability of the subnational global hunger index; to assess health inequality in children under the age of five in Indonesia.

Method: We use secondary data analysis to determine malnutrition and child mortality prevalence using aggregate data from national basic health research survey reports (2007, 2010, 2013, 2018) and demographic survey reports from 2002, 2012, and 2017. The subnational hunger index was calculated using previously standardized undernutrition, stunting, wasting, and child mortality rates. Factor analysis and Pearson correlation with Alpha Cronbach coefficient were used to assess the validity and reliability. Further analysis using longitudinal panel data analysis with random effect models in STATA.

Results: The total percentage of variance (56.32%) demonstrates indicator construct validity. Cronbach Alpha Coefisien > 0.90, according to reliability analysis. Pearson correlation between GHI-SN and Public Health Development Index (IPKM) for all and IPKM for children under five (IPKM) 2013 and 2018 and IKPS (Special Index Stunting Management) index is strong, with r: -0.8: -0.67, respectively.

Conclusion: The study found the Subnational Global Hunger Index (GHI-SN) to be valid and reliable. It can be used as an alternative measurement tool in Indonesia to assess health inequality and hunger in children under five.

Keyword: Children under five, GHI, Subnational hunger index