RT Journal A1 Holmboe ES, Lipner R, Greiner A T1 Assessing quality of care: Knowledge matters JF JAMA JO JAMA YR 2008 FD January 23 VO 299 IS 3 SP 338 OP 340 DO 10.1001/jama.299.3.338 UL http://dx.doi.org/10.1001/jama.299.3.338 AB Significant quality-of-care gaps are well documented in the United States.1- 2 These reports have focused mostly on underuse of performance measures of important processes of care, and some outcomes of care.1 Others have argued that the cause of underuse of these evidence-based processes of care is usually not deficient physician knowledge about whether to perform the examination or order the test, but rather poorly designed, dysfunctional microsystems of care unable to deliver effective, efficient, and reliable care.3- 4