Table. 3.

Comparison of mode and geometric mean criteria for anti-B

Year Round Methods No. Acceptable (%)

Mode±1 titer GM±1 GSD GM±2 GSD GM±3 GSD
2016 1st Tube, IS 41 34 (82.9) 30 (73.2) 39 (95.1) 40 (97.6)
2016 2nd Tube, IS 42 34 (81.0) 26 (61.9) 40 (95.2) 42 (100.0)
2017 1st Tube, IS 42 41 (97.6) 24 (57.1) 41 (97.6) 42 (100.0)
2017 2nd Tube, IS 42 32 (76.2) 29 (69.0) 39 (92.9) 41 (97.6)
2018 1st Tube, IS 41 40 (97.6) 34 (82.9) 40 (97.6) 41 (100.0)
2018 2nd Tube, IS 37 36 (97.3) 22 (59.5) 36 (97.3) 37 (100.0)
2019 1st CAT AHG 30 29 (96.7) 24 (80.0) 30 (100.0) 30 (100.0)
2019 1st Tube, IS 39 33 (84.6) 33 (84.6) 37 (94.9) 38 (97.4)
2019 2nd CAT AHG 32 31 (96.9) 29 (90.6) 29 (90.6) 32 (100.0)
2019 2nd Tube, IS 38 35 (92.1) 17 (44.7) 35 (92.1) 38 (100.0)
2020 1st CAT AHG 33 33 (100.0) 17 (51.5) 33 (100.0) 33 (100.0)
2020 1st Tube, IS 38 37 (97.4) 22 (57.9) 37 (97.4) 38 (100.0)
2020 2nd CAT AHG 35 34 (97.1) 18 (51.4) 34 (97.1) 35 (100.0)
2020 2nd Tube, IS 35 34 (97.1) 17 (48.6) 34 (97.1) 35 (100.0)

The mode criteria reflect the current Korean proficiency-testing scheme. Bold indicates results with P<0.05 compared to the mode criteria.

Abbreviations: GM, geometric mean; GSD, geometric standard deviation; IS, immediate spin technique; CAT, column agglutination technique; AHG, anti-human globulin.

Lab Med Qual Assur 2022;44:48~54 https://doi.org/10.15263/jlmqa.2022.44.1.48
© Lab Med Qual Assur