Laboratory Medicine and Quality Assurance

Table. 5.

Proficiency test results for hemoglobin

Year Item No. of participants Mean±SD CV (%) Median Min Max No. except outliers Outliers (%)
2021 1st
HH-21-01 1,804 13.15±0.21 1.6 13.1 5.5 16.4 1,740 3.5
HH-21-02 1,804 5.57±0.16 2.8 5.5 4.2 18.6 1,747 3.2
HH-21-03 1,804 15.91±0.31 1.9 15.9 5.3 21.8 1,737 3.7
2nd
HH-21-01 1,817 16.51±0.31 1.9 16.5 5.6 22.1 1,736 4.5
HH-21-02 1,817 5.71±0.17 2.9 5.7 4.7 56.9 1,754 3.5
HH-21-03 1,817 13.44±0.22 1.6 13.4 4.7 42.6 1,731 4.7
2022 1st
HH-22-01 1,817 5.61±0.16 2.8 5.6 4.3 19.5 1,751 3.6
HH-22-02 1,817 16.20±0.31 1.9 16.2 5.2 25.3 1,737 4.4
HH-22-03 1,817 13.57±0.22 1.6 13.6 4.6 51.8 1,712 5.8
2nd
HH-22-01 1,837 5.22±0.21 4.0 5.2 0 16.3 1,791 2.5
HH-22-02 1,837 14.94±0.26 1.7 14.9 0 18.1 1,644 10.5
HH-22-03 1,837 13.45±0.24 1.8 13.4 0 38.5 1,731 5.8

Abbreviations: SD, standard deviation; CV, coefficient of variation.

Lab Med Qual Assur 2023;45:43~51 https://doi.org/10.15263/jlmqa.2023.45.2.43
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