Figure 2.

Illustration of the consensus score calculation. In the data exchange exercises, when analysing a sample the laboratories assigned antibody specificities as either positive or negative, which were then coded as 1 or 0, respectively. Columns labelled A‐F give the examples of results from six participating laboratories (A‐F). The highest consensus score is 6, when all laboratories agree. The lowest consensus score is 3, where only half of the laboratories are in agreement. For example in the illustration above, HLA‐A1 and HLA‐A2 both have a consensus score of 6. HLA‐A1 was assigned as positive and HLA‐A2 was assigned as negative by all laboratories. The same consensus score calculation was applied to the designation of acceptable mismatches