WASHINGTON -- A new study asserts that roughly 600,000 Iraqis have died from violence since the U.S.-led invasion in March 2003, a figure many times higher than any previous estimate.

This study is going to have a hard ride. In part it is because many of us in the information business are not statistically literate enough to judge the sampling techniques. Many will tend to dismiss the findings as implausible without a full appreciation of how low the margin of error is this time. Second, it is a projection, and all projections are subject to possible error, and journalists, being hardnosed people, are wary of them.

The New York Times report has already made a serious error, saying that deaths in the Saddam period were covered up. The families interviewed knew whether their loved ones were disappearing in 2001 and 2002 and had no reason to cover it up if they were. The survey established the baseline with a contemporary questionnaire. It wasn't depending on Iraqi government statistics.

Another reason for the hard ride is that the Republican Party and a significant fraction of the business elite in this country is very invested in the Iraq War, and they will try to discredit the study. Can you imagine the profits being made by the military-industrial complex on all this? Do they really want the US public to know the truth about what the weapons they produce have done to Iraqis? When you see someone waxing cynical about the study, ask yourself: Does this person know what a chi square is? And, who does this person work for, really?

Then Anthony Cordesmann told AP that the timing and content of the study were political. But is he saying that 1800 households from all over Iraq conspired to lie to Johns Hopkins University researchers for the purpose of defeating Republicans in US elections this November? Does that make any sense? And, if Cordesmann has evidence that the authors and editor set their timetable for completion and publication according to the US political calendar, he should provide it. If he cannot, he should retract.

Ironically enough, the same journalists who will question this study will accept without query the estimates for deaths in Darfur, e.g., which are generated by exactly the same techniques, and which are almost certainly not as solid.