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Fig. 2 | Diagnostic Pathology

Fig. 2

From: Diagnostic errors in fatal medical malpractice cases in Shanghai, China: 1990–2015

Fig. 2

The annual number and incidence rate of cases with diagnostic errors over five periods: 1990–1994, 1995–1999, 2000–2004, 2005–2010 and 2011–2015. a The case number and incidence rate of any discrepant cases (Class I to V) were shown and plotted. Total case numbers dropped dramatically (R2 = − 0.94, p = 0.017) and the incidence rate decreased accordingly (R2 = − 0.96, p = 0.01). b-c The case number and incidence rate of major discrepant cases (Class I and II) were shown. Incidence rate of Class I error steadily dropped (R2 = − 0.96, p = 0.01), and that of Class II error exhibited an initial increase followed by steady decreases. d-e The annual number and incidence rate of minor discrepant cases (Class III and IV) were shown. Incidence rate of Class III error steadily dropped (R2 = − 0.97, p = 0.005), and that of Class IV error exhibited a small increase for the former 10 years but decreased steadily onward (R2 = − 0.93, p = 0.02). f Case numbers of class V discrepancy fluctuated during the period. Its incidence rate exhibited an initial increase, followed by steady decreases onward (R2 = − 0.89, p = 0.04)

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