RT Journal A1 Ma J, Xiao L, Stafford RS T1 UNderdiagnosis of obesity in adults in us outpatient settings JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2009 FD February 9 VO 169 IS 3 SP 312 OP 316 DO 10.1001/archinternmed.2008.582 UL http://dx.doi.org/10.1001/archinternmed.2008.582 AB Obesity affects nearly 32%—more than 60 million—American adults.1 The obesity epidemic imposes an enormous cost on the nation's health2 and economy.3 Evidence-based clinical guidelines recommend that treatment for obesity incorporates a 2-step process: assessment and management.4 Routine screening and accurate diagnosis are among the first steps leading to proper treatment. However, research on obesity screening and diagnosis in US outpatient settings is limited.