Beyond the declines in overall violence in Iraq, several crucial measures the Bush administration uses to demonstrate economic, political and security progress are either incorrect or far more mixed than the administration has acknowledged, according to a report released Monday by the Government Accountability Office.

Over all, the report says, the American plan for a stable Iraq lacks a strategic framework that meshes with the administration’s goals, is falling out of touch with the realities on the ground and contains serious flaws in its operational guidelines.

Newly declassified data in the report on countrywide attacks in May shows that increases in violence during March and April that were touched off by an Iraqi government assault on militias in Basra have given way to a calmer period. Numbers of daily attacks have been comparable to those earlier in the year, representing about a 70 percent decline since June 2007, the data shows.

While those figures confirm the assessments by American military commanders that many of the security improvements that first became apparent last fall are still holding, a number of the figures that have been used to show broader progress in Iraq are either misleading or simply incorrect, the report says.