California Public Policy and Citizen Participation/Vulnerability index

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A vulnerability index is a composite of indices, also referred to as integrated indices, which are quantitative indicators similar to scales, which, when entered into a formula, deliver a single numerical result which can be used for triage (prioritization) and policy analysis. Through their use, ““diverse issues can be combined into a standardised framework…making comparisons possible”.[1] For instance, variable from physical science can be combined with social, medical and even psychological variables to evaluate potential complications in disaster planning contexts.

Basic methodology[edit]

The basic methodology is quite simple and not without antecedents. Different relative importance is assigned to the different factors (weighting). A cumulative score is then generated. Through application of variable scenarios decision trees can be developed reflecting alternative policy options.Much of the original research has been evaluated by Lino Briguglio and presenters at Oxford, providing a body of secondary source material which is known primarily to workers in specialized areas of development.

Earlier use[edit]

A modern concept of a composite vulnerability index grew out of the work of South Pacific Applied Geoscience Commission (SOPAC), Fiji, and the Expert Group on Vulnerability Index [2] affiliated with the United Nations.

“in response to a call made in the Barbados Plan of Action, the Alliance of Small Island States (AOSIS)”[3]

A prominent observer and participant in development of the vulnerability index model is University of Malta researcher Briguglio for international organizations of small island developing states. [4] UM also hosts the Islands and Small States Institute, Foundation for International Studies,. Other institutional participants included the New Zealand Official Development Assistance (NZODA) Programme [5] In 1996, the concept of a composite vulnerability index had been taken up by policy analysts in the Commonwealth but still on only a tentative basis. [6] In 1997, official background papers of the SIDS unit reflected the term “vulnerability index” at least internally.[7] It was also advanced in Commonwealth channels.[8] By 1997, the term was approved for publication by the staff of the Secretary-General of the United Nations in the SG’s Report on Development of a Vulnerability Index for SIDS. [9] This concept was subsequently adopted by other experts in that field.[10] and explicitly named as such. [11].

In a 1999 Technical Report for SOPAC, Kaly et al discussed more specially designated vulnerability indexes. A subsection of that report was entitled “. Vulnerability index – environment” and the report also discussed a newly minted concept of “Environmental vulnerability index”.

A 2002 paper applied a vulnerability index model to analysis of vulnerability to sea level rise for a US coastal community.[12]

At a 2008 Capacity Building Seminar at Oxford, the “Climate Vulnerability Index” was [13] presented with an application to the protection of tourist economies, which may be important to small island states and others. By the time of this seminar, vulnerability indexes were established as tools of governance .

In medicine[edit]

A “Histopathological Plaque Vulnerability Index (HPVI) “ was proposed in a 2005 paper by Tang, et al, entitled Local Maximal Stress Hypothesis and Computational Plaque Vulnerability Index for Atherosclerotic Plaque Assessment [14]. Thereafter, the term was adopted by Dr Jim O’Connell , who is author of a textbook on healthcare in shelters. From his post at Boston’s Healthcare for the Homeless, the model was adopted by Common Ground, an advocacy organization in New York City which has promulgated its organizing model using the vulnerability index to, Santa Monica, New Orleans, Washington, DC, and what their literature refers to as “Los Angeles County’s infamous Skid Row”. It utilizes only eight key key health indicators puts a chronically homeless person at significant risk of dying. The model is now being adapted to and utilized in Australia , with the on-site support Common Ground personnel and has been used in registry week drives in the “ inner city areas” of Brisbane, Melbourne and Sydney. [15]


  2. Pantin, D. (1997). Alternative Ecological Vulnerability Indicators for Developing Countries with Special Reference to SIDS. Report prepared for the Expert Group on Vulnerability Index. UN(DESA), 17-19 December 1997.
  3. Technical Report 275
  4. Briguglio, L. (1992). Preliminary Study on the Construction of an Index for Ranking Countries According to their Economic Vulnerability, UNCTAD/LDC/Misc.4 (1992).
  6. Wells, J. (1996). Composite Vulnerability Index: A Preliminary Report. London: Commonwealth Secretariat.
  7. United Nations – DPCSD (1997). Vulnerability Index (Revised Background Paper). SD-SIDS Unit.
  8. Wells, J. (1997). Composite Vulnerability Index: A Revised Report. London: Commonwealth Secretariat.
  9. United Nations (1997). Report of the Secretary-General on the Development of a Vulnerability Index for Small Island Developing States (Advance Unedited Version to be submitted to the Commission for Sustainable Development, Sixth Session, 20 April-1 May 1998, and to the Committee for Development Planning, 32nd session, 4-8 May 1998).
  10. Easter, C. (1998). ‘Small States and Development: A Composite Index of Vulnerability’ in Small States: Economic Review and Basic Statistics, Commonwealth Secretariat, December 1998
  11. Crowards, T. (1999). An Economic Vulnerability Index for Developing Countries, with Special Reference to the Caribbean: Alternative Methodologies and Provisional Results. Caribbean Development Bank, March 1999.