Calculation of The Index
The Index ranks countries on a 100 point scale, with 0 being the best score ("no hunger") and 100 being the worst, though neither of these extremes is achieved in practice. The higher the score, the worse the food situation of a country. Values less than 4.9 reflect "low hunger", values between 5 and 9.9 reflect "moderate hunger", values between 10 and 19.9 indicate a "serious", values between 20 and 29.9 are "alarming", and values exceeding 30 are "extremely alarming" hunger problem.
The GHI combines three equally weighted indicators: 1) the proportion of the undernourished as a percentage of the population; 2) the prevalence of underweight children under the age of five; and 3) the mortality rate of children under the age of five.
The data used for the 2012 GHI are for the period from 2005 to 2010 – the most recent available global data for the three components of the GHI. The data on the proportion of undernourished come from the Food and Agriculture Organization of the UN (FAO) and IFPRI (estimates) are for 2006-2008. Data on underweight of children under 5 are based on data from 2005-2010 collected by the World Health Organization (WHO), UNICEF and MEASURE DHS and also includes estimates by the authors. Data on child mortality are for 2010 from UNICEF. The 2012 GHI, the recalculated base value of the 1990 GHI as well as the values of 1996 and 2001 are not directly comparable to previously calculated GHI values. The values reflect the latest revised data for the three components of the GHI and include estimate where original source data were not available, based on the most recent data available.
Read more about this topic: Global Hunger Index
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