Saturday, October 30, 2004
i have no commentary.
Researchers have estimated that as many as 100,000 more Iraqis -- many of them women and children -- died since the start of the U.S.-led invasion of Iraq than would have been expected otherwise, based on the death rate before the war.
The scientists who wrote the report concede that the data they based their projections on were of "limited precision," because the quality of the information depends on the accuracy of the household interviews used for the study. The interviewers were Iraqi, most of them doctors.
The survey attributed most of the extra deaths to violence and said airstrikes by coalition forces caused most of the violent deaths.
"Most individuals reportedly killed by coalition forces were women and children," the researchers wrote.
Richard Peto, an expert on study methods who was not involved with the research, said the approach the scientists took is a reasonable one to investigate the Iraq death toll.
However, it's possible that they may have zoned in on hotspots that might not be representative of the death toll across Iraq, said Peto, a professor of medical statistics at Oxford University in England.
Lancet editor Richard Horton wrote in an editorial accompanying the survey that more household clusters would have improved the precision of the report, "but at an enormous and unacceptable risk to the team of interviewers."
"This remarkable piece of work represents the efforts of a courageous team of scientists," he wrote.
To conduct the survey, investigators visited 33 neighborhoods spread evenly across the country in September, randomly selecting clusters of 30 households to sample. Of the 988 households visited, 808, consisting of 7,868 people, agreed to participate. Each household was asked how many people lived in the home and how many births and deaths there had been since January 2002.
The scientists then compared death rates in the 15 months before the invasion with those that occurred during the 18 months after the attack and adjusted those numbers to account for the different time periods.
Even though the sample size appears small, this type of survey is considered accurate and acceptable by scientists and was used to calculate war deaths in Kosovo in the late 1990s.
In the households reporting deaths, the person who died had to be living there at the time of the death and for more than two months before to be counted. In an attempt at firmer confirmation, the interviewers asked for death certificates in 78 households and were provided them 63 times.
There were 46 deaths in the surveyed households before the war. After the invasion, there were 142 deaths. That is an increase from 5 deaths per 1,000 people per year to 12.3 per 1,000 people per year -- more than double.
However, more than a third of the post-invasion deaths were reported in one cluster of households in the city Fallujah, where fighting has been most intense recently. Because the fighting was so severe there, the numbers from that location may have exaggerated the overall picture.
When the researchers recalculated the effect of the war without the statistics from Fallujah, the deaths end up at 7.9 per 1,000 people per year -- still 1.5 times higher than before the war.
Even with Fallujah factored out, the survey "indicates that the death toll associated with the invasion and occupation of Iraq is more likely than not about 100,000 people, and may be much higher," the report said.
The most common causes of death before the invasion of Iraq were heart attacks, strokes and other chronic diseases. However, after the invasion, violence was recorded as the primary cause of death and was mainly attributed to coalition forces -- with about 95 percent of those deaths caused by bombs or fire from helicopter gunships.