Measuring the Quality of Physician Practice by Using Clinical Vignettes: A Prospective Validation Study

Figure 2. Scores are expressed as percentage correct; error bars represent upper bound of 95% CIs. Per analysis of variance
model, < 0.001 (overall); > 0.2 for method by disease interaction. COPD = chronic obstructive pulmonary disease.
Direct comparison of scores, overall and by disease, using 3 measurement methods: standardized patients, vignettes, and chart
abstraction.PP
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Ann Intern Med
November 16, 2004
vol. 141
no. 10
771-780