The Iraq deaths study was valid and correct

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http://www.theage.com.au/news/opinion/the-iraq-deaths-study-was-valid-and-correct/2006/10/20/1160851135985.html

LAST week, the medical journal The Lancet published the findings of an important study of deaths in Iraq. President George Bush and Prime Minister Howard were quick to dismiss its methods as discredited and its findings as not credible or believable. We beg to differ: the study was undertaken by respected researchers assisted by one of the world's foremost biostatisticians. Its methodology is sound and its conclusions should be taken seriously.

Professor Gilbert Burnham and colleagues from the Johns Hopkins Bloomberg School of Public Health in Baltimore and Al Mustansiriya University School of Medicine in Baghdad measured deaths in Iraq between January 2002 and July 2006. They surveyed 12,801 individuals in 1849 households in 47 representative clusters across the country.

Their study is important in providing the only up-to-date, independent, and comprehensive scientific study of mortality after the 2003 invasion and occupation of Iraq. The study found that mortality had risen alarmingly since March 2003 and continues to rise. The number of conflict-related excess deaths, above and beyond those that would normally occur, was estimated at 655,000. While precision about such figures is difficult, we can be confident that the excess deaths were above 390,000, and may in fact be as high as 940,000. The vast majority (92 per cent) of the excess deaths were due to direct violence.

The cross-sectional household cluster sample survey method used is a standard, robust, well-established method for gathering health data. A copy of a death certificate was available for a high proportion (92 per cent) of deaths. Conservative assumptions were made about deaths of uncertain cause and about the small areas not sampled.