Table 2. ABO genotype-phenotype agreement§.
| ABO genotype | ||||||
|---|---|---|---|---|---|---|
| ABO phenotype |
OO N (%) |
AO N (%) |
AA N (%) |
BO N (%) |
BB N (%) |
AB N (%) |
| O | 1453 (99.3) | 25 (4.3) | 1 (2.0) | 13 (2.8) | 3 (7.3) | 0 (0.0) |
| A | 4 (0.3) | 549 (94.6) | 54 (98.0) | 17 (3.6) | 0 (0.0) | 1 (1.4) |
| B | 5 (0.3) | 5 (0.9) | 0 (0.0) | 442 (93.4) | 38 (92.7) | 2 (2.7) |
| AB | 1 (0.1) | 1 (0.2) | 0 (0.0) | 1 (0.2) | 0 (0.0) | 71 (95.9) |
§Agreement between ABO blood group phenotype and ABO genotype was determined for 2686 community control samples that were successfully typed by both methods. The expected genotype-phenotype combinations are highlighted in bold. Overall concordance using Cohen’s Kappa statistic was 0.95, p<0.0001 (a score of 1 corresponds to complete agreement, while 0 corresponds to no agreement).