title: Measuring Clinical Performance: Make Sure the Ruler Is Accurate.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Duke University Medical Center, Duke University, Durham, NC.
authors.forename: Neil
authors.initials: N
authors.lastname: MacIntyre
mesh_terms: D006801:Humans; D019984:Quality Indicators, Health Care; D015203:Reproducibility of Results