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