Table. 3.

Center volume and patient outcomes after heart transplantation and lung transplantation

Study No. of patients No. of centers Outcome Cut-off value (case/yr) Impact of case volume
Heart
Weiss et al. (2008) [32] 14,401 143 30-day and 1-yr mortality Low (<10)
High (>10)
Significant
Shuhaiber et al. (2010) [30] 13,230 147 1-yr mortality Very low (1–11)
Low (12–21)
Medium (22–33)
High (>34)
Significant
Grimm et al. (2015) [31] 19,849 144 Survival after postoperative complications Low (<14.5)
Intermediate (14.5–26.5)
High (>26.5)
Significant
Lung
Scarborough et al. (2010) [33] 7,829 74 The O:E ratio for 1-yr mortality Low (<20)
Medium (21–34)
High (>35)
Significant
Yoon et al. (2019) [34] 315 7 Risk-adjusted in-hospital mortality and long-term survival (up to 7 yr) Low (≤5)
High (>5)
Insignificant
Jawitz et al. (2021) [35] 7,322 72 Incidence of grade 3 primary graft dysfunction Low (<70)
High (>70)
Significant
Yang et al. (2022) [36] 10,007 71 1-yr survival Low (<33)
High (>33)
Significant

O:E, observed-to-expected.

Korean J Transplant 2023;37:1~10 https://doi.org/10.4285/kjt.23.0010
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