Figure 1.

Kaplan–Meier survival analysis regarding the occurrence of immune reactions. Patients who received a graft that was >21 days in organ culture showed statistically significantly fewer immune reactions compared to patients with grafts of ≤21 days of organ culture (Cox regression analysis P=0.03). After 2 years estimates from Kaplan–Meier survival analysis were 26.5 (95% confidence interval 21.6–31.2)% of grafts with an endothelial immune reaction in Group 1 (storage time <21 days), compared with 20.1 (95% confidence interval 15.5–24.5)% in Group 2 (storage time >21 days). After 3 years the respective estimates from Kaplan–Meier survival analysis were 32.6 (95% confidence interval 25.9–38.6)% for Group 1 and 25.9 (95% confidence interval 18.9–32.3)% for Group 2 (see Table 1).