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Fig. 4.

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Fig. 4. Box plot analysis of mean percentage bias for total samples for each test according to different performance goals. (A) HbA1c, (B) creatinine, (C) total cholesterol, (D) triglyceride, and (E) alpha-fetoprotein. The gray box plot shows the minimum, first quartile, median, third quartile, and maximum values. The blue line indicates the mean and the blue diamond the confidence interval of the data. Groups were compared using the Student–Newman–Keuls multiple-comparison test. **P≤0.001 and *P≤0.05.
Ann Lab Med 2023;43:425~433

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