The survey by the Washington-based Pew Research Center showed that many U.S. journalists believe coverage has painted too rosy a picture of the conflict.

Much of the danger for journalists is faced by local Iraqis, who often do most of the reporting outside Baghdad's heavily fortified Green Zone, the data showed.

Fifty-eight percent of U.S. news organizations have had local Iraqi staff killed or kidnapped within the past year, the survey said. About two-thirds of news outlets said local staff face physical or verbal threats at least several times a month.

"Above all, the journalists -- most of them veteran war correspondents -- describe conditions in Iraq as the most perilous they have ever encountered, and this above everything else is influencing the reporting," the authors said in a report that accompanied the data.

At least 122 journalists and 41 media support staff have been killed in Iraq since the U.S.-led invasion in 2003, the New-York based Committee to Protect Journalists says. About 85 percent of those killed were Iraqis.

Pew's Project for Excellence in Journalism surveyed 111 journalists who have worked in Iraq for 29 news organizations, all but one of them U.S.-based. The poll was conducted September 28 through November 7, Pew said.

AMSI Net- Agencies