Table 2.
Internal Validation in Terms of the Model Outcomes and Median Waiting Times in the Model Compared with the Average Numbers Reported in Norway (Rounded to the Nearest Whole Number)
| Variable | Model Average (Average Range a ) (per Year) | Average (Range b ) in Norway in the Past 6 y (per Year) |
|---|---|---|
| Number enlisted for first transplantation | 103 (92–115) a | 103 (81–119) |
| First liver transplantations | 80.8 (72–91) a | 81 (72–88) |
| Retransplantations | 9.0 (6–13) a | 12 (8–19) |
| Withdrawals (independent of waiting time) | 6.2 (3–9) a | 7 (5–13) |
| Death/dropout Status Quo | 3.3 (1–8) a | 5 (3–7) |
| Total withdrawals from waiting list | 9.5 | 12 |
| Deceased donor livers | 95 | 95 (83–102) |
| Imported livers | 20 | 19 (12–27) |
| Deceased donor livers + imported livers | 115 (100–127) a | 114 |
| Exported livers | 11 (8–27) a | 22 (20–28) |
| Average number waiting | 19.5 (0–106) c | 22 (15–34) |
| Waiting Time by Blood Type | Median (Range c ) in Model (d) | Median (Range a ) in Norway in Past 5 y (d) |
| A | 32 (0–390) | 32 (26–42) |
| B | 53 (0–357) | 48 (40–63) |
| AB | 21 (0–356) | 21 (14–26) |
| 0 | 106 (0–794) | 92 (66–111) |
| Overall | 52 (0–794) | 40 (26–62) |
| Survival after Transplantation | 75% Overall Survival in Model (y) | 75% Overall Survival Empirical (y) |
| HCC | 2.20 | 2.32 |
| PBC | 7.25 | 8.75 |
| PSC | 8.94 | 8.71 |
| ALF | 2.23 | 2.42 |
| AC | 5.43 | 6.48 |
| Others | 5.05 | 5.50 |
| Palliative chemotherapy | 1.18 | 1.29 |
| CRLM SECA I | 2.64 | 2.83 |
| CRLM SECA II | 5.06 | N/A |
AC, alcoholic cirrhosis; ALF, acute liver failure; CRLM, colorectal cancer liver-only metastases; HCC, hepatocellular carcinoma; PBC, primary biliary cirrhosis; PSC, primary sclerosing cholangitis.
a
Minimum average and maximum average across 7,000 replications.
b
Minimum and maximum over the past 6 y in Norway.
c
Minimum and maximum across all 7,000 replications.