Incidence of rejection.

<p>The number of patient experiencing 1 or more biopsy proven rejections (including borderline cases with impaired renal graft function) according to the Banff 97 classification: 2 = antibody mediated rejection (AMR), 3 = borderline lesion, 4 I and 4 II = acute cellular rejection.</p

Loss of renal function within the first year.

<p>The GFR slope within the first year was assessed according to the following formula: GFR _{at 1 month}−GFR _{at 12 month}.</p