Figure 3.

Grade agreement between microgel and rapid gel assays. One hundred thirty‐two crossmatches between the plasma (microgel) or serum (rapid gel) of 11 horses and the erythrocytes of 12 horses. In each section, dots were spread out within the appropriate grade to avoid overlap. Grades highlighted in blue (0 and 1) are considered compatible and grades in red (2‐4) are considered incompatible. Any diagonal line between 2 dots represents a discrepancy of grade and lines crossing between the blue and red sections represent a discrepancy of compatibility between the 2 tests. Agreement between the rapid gel and the microgel assays was good for compatibility (κ = .62) but slight for grades (weighted κ = .40)