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.