FIGURE 6.

The distribution of HLA mismatches stratified by relatedness of the donor, for all living donors, is skewed to the right for the LU stratum because there are relatively small numbers of living donors in categories 0 to 2 (Table 1). Given that the LU 0 and 1 mismatch categories were not significantly different from the LR 0-mismatch category in the full Cox regression, improving the numbers of persons in these categories could potentially increase overall survival in the unrelated sample.