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'Dirty War Index': New Tool Identifies Rates Of Prohibited Or Undesirable War Outcomes

Date:
December 19, 2008
Source:
Public Library of Science
Summary:
Researchers have created a new tool called the "Dirty War Index" based on the laws of war, a tool which identifies rates of prohibited or highly undesirable ("dirty") war outcomes, such as torture, child injury and civilian death.

Researchers have developed a new tool called the "Dirty War Index (DWI)" based on the laws of war, a tool which identifies rates of prohibited or highly undesirable ("dirty") war outcomes, such as torture, child injury, and civilian death.

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The researchers, Madelyn Hsiao-Rei Hicks (Institute of Psychiatry, King's College London, UK) and Michael Spagat (Royal Holloway College, University of London, Egham, UK), argue that the new tool can help document, analyze, and prevent harmful effects of armed conflicts on populations. The DWI, they say, explicitly links these "dirty" outcomes to international humanitarian laws and exposes rates of unacceptable combat outcomes (high DWI values) from different weapons or combatant groups.

The DWI is a ratio and is calculated as: (number of "dirty" cases/total number of cases) x 100. The best possible DWI value is 0, indicating that the objectionable outcome is identified in no measured cases. The worst possible DWI value is 100, indicating that the objectionable outcome is identified in 100% of measured cases.

Hicks and Spagat give several examples of DWIs calculated for actual armed conflicts, such as a DWI that measures the proportion of civilian deaths in the Colombian civil conflict from 1988-2005. This DWI is calculated as (number of civilians killed/total number of civilians and opponent combatants killed) x 100. Using data from the Conflict Analysis Resource Center (http://www.cerac.org.co/home_english.htm) on unopposed attacks where responsibility for deaths is clear, they find that illegal paramilitaries killed 6,944 civilians and 41 combatant opponents, a DWI of 99; guerillas killed 2,498 civilians and 2,946 combatant opponents, a DWI of 46, and government forces killed 539 civilians and 659 combatant opponents, a DWI of 45. These DWIs for this conflict, say the authors, "show that paramilitaries are the 'dirtiest' in terms of proportion of civilians constituting their victims of unopposed attacks."

Any DWI rate above 0, they say, for prohibited actions or war crimes is unacceptable, and eliminating violations is imperative. DWIs for undesirable outcomes are less straightforward. "The highly undesirable outcome of civilian harm," they say "is not prohibited by laws of war if combatants do everything feasible to distinguish between civilians and military targets (the principle of distinction), if they attempt to minimize incidental harm to civilians, and if they intend to avoid harming civilians in excess of anticipated military goals (the principle of proportionality)." Nevertheless, they argue that high DWI values for undesirable outcomes indicate extreme destruction, signal the need for close scrutiny, and may suggest war crimes.

The authors argue that since DWIs give ratios, rather than absolute numbers, they "lend themselves to comparisons over time, between wars, between weapons, and between warring combatant groups to identify better versus worse performers."

Hicks and Spagat's paper is accompanied by two expert commentaries about the DWI, one that explores the public health uses and one that lays out statistical limitations.

Egbert Sondorp (Conflict and Health Programme, London School of Hygiene and Tropical Medicine, UK), who was uninvolved in developing the tool, says that the novelty of the DWI is "its expression of public health findings as a ratio, in combination with a link to a specific international humanitarian law." A whole range of DWIs can be constructed, says Sondorp, "from rape to the use of prohibited weapons to the use of child soldiers, as long as acts counter to humanitarian law can be counted."

In a second expert commentary, Nathan Taback (Dalla Lanna School of Public Health, University of Toronto, Canada), also uninvolved in developing the tool, examines statistical issues, feasibility, and interpretation of the DWI. Some of the statistical issues he discusses are the potential for selection bias (i.e. using a biased sample), the problem of missing data, and the problem of "censoring" (i.e. when the value of an observation is only partially known).


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal References:

  1. Hicks et al. The Dirty War Index: A Public Health and Human Rights Tool for Examining and Monitoring Armed Conflict Outcomes. PLoS Medicine, 2008; 5 (12): e243 DOI: 10.1371/journal.pmed.0050243
  2. Taback et al. The Dirty War Index: Statistical Issues, Feasibility, and Interpretation. PLoS Medicine, 2008; 5 (12): e248 DOI: 10.1371/journal.pmed.0050248

Cite This Page:

Public Library of Science. "'Dirty War Index': New Tool Identifies Rates Of Prohibited Or Undesirable War Outcomes." ScienceDaily. ScienceDaily, 19 December 2008. <www.sciencedaily.com/releases/2008/12/081216104317.htm>.
Public Library of Science. (2008, December 19). 'Dirty War Index': New Tool Identifies Rates Of Prohibited Or Undesirable War Outcomes. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2008/12/081216104317.htm
Public Library of Science. "'Dirty War Index': New Tool Identifies Rates Of Prohibited Or Undesirable War Outcomes." ScienceDaily. www.sciencedaily.com/releases/2008/12/081216104317.htm (accessed December 21, 2014).

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