This is from your link.
What is the real death toll in Iraq?
The Americans learned one lesson from Vietnam: don't count the civilian dead. As a result, no one knows how many Iraqis have been killed in the five years since the invasion. Estimates put the toll at between 100,000 and one million, and now a bitter war of numbers is raging. Jonathan Steele and Suzanne Goldenberg report
The results range from just under 100,000 dead to well over a million. Inevitably, the issue has become a political football, with the Bush administration, the British government and other supporters of the US-led occupation seizing on the lowest estimates and opponents on the highest.
The first survey found at least 98,000 such deaths up to October 2004. The second survey, in the summer of 2006, interviewed a separate but also randomly chosen sample of 1,849 households and found an excess of 655,000 deaths up to June 2006, of which 601,027 were said to be from violence rather than natural causes. This amounts to 2.5% of Iraq's population, or more than 500 deaths a day since the invasion.
Finally, they point out that more recent data confirm their findings and even suggest a higher figure. The British polling firm Opinion Research Business (ORB) asked 1,720 Iraqi adults last summer if they had lost family members by
violence since 2003; 16% had lost one, and 5% two. Using the 2005 census total of 4,050,597 households in Iraq, this suggests 1,220,580 deaths since the invasion. Accounting for a standard margin of error, ORB says, "We believe the range is a minimum of 733,158 to a maximum of 1,446,063."
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