The short story of the long-term Sigma metric: shift cannot be treated as a linear parameter

Affiliations

¹ Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Medical Biochemistry, Atasehir, Istanbul, Turkey, Phone: +90 532 744 66 83, Fax: +90 216 576 51 20.
² Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Medical Biochemistry, Atasehir, Istanbul, Turkey.

Comment

Abdurrahman Coskun et al. Clin Chem Lab Med. 2019.

. 2019 Aug 27;57(9):e211-e213.

doi: 10.1515/cclm-2018-1139.

¹ Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Medical Biochemistry, Atasehir, Istanbul, Turkey, Phone: +90 532 744 66 83, Fax: +90 216 576 51 20.
² Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Medical Biochemistry, Atasehir, Istanbul, Turkey.

No abstract available

Keywords: Sigma metric; Six Sigma; extra-analytical phase; laboratory error.

Comment on

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1. Coskun A. Six Sigma and laboratory consultation. Clin Chem Lab Med 2007;45:121–3.
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1. Coskun A, Serteser M, Kilercik M, Aksungar F, Unsal I. A new approach to calculating the Sigma Metric in clinical laboratories. Accred Qual Assur 2015;20:147–52.