What Is The HVI?
The Household Vulnerability Index (HVI) is a composite statistical index that was designed to quantify the vulnerability introduced into a given household by combining the various impacts from a multiplicity of variables. The nature, and extent of the various impacts identified are used to award vulnerability scores and weights, which are used to compute the index for each household. As indicated by Thomas (2003), to be able to address vulnerability effectively it needs to be measured so that areas of highest priority can be identified. This equity approach to vulnerability is critical for sustainable development in general. The HVI index is used to categorise households according to their varying degrees of vulnerability. Households are classified into three levels of vulnerability based on the index, i.e., Coping Level Households (CLH); Acute Level Households (ALH) and Emergency Level Households (ELH). Then, based on the different vulnerability levels specific relief or development packages are recommended to policy makers for assisting the affected households overcome their vulnerability.
The HVI provide answers to two most important questions:
1. How can the ‘most vulnerable’ be identified and assisted?
2. How can the impact of the epidemic on household food security be monitored and evaluated over time?
The HVI provides a yardstick to answer these questions, and when longitudinal data is available, the HVI will also keep track of progress towards food security in the region.
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