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Transplant Statistics: Annual Report : Reference Tables

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Table 9.2
Time to Transplant
New Liver Waiting List Registrations, 1992 to 2001

Residency Year of Waiting List Registration
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001
Total Number of Registrations 4,814 5,533 6,227 7,339 8,058 8,631 9,543 10,514 10,883 11,136
10th Percentile of TT (Days) 6 7 7 10 12 15 19 27 28 29
25th Percentile of TT (Days) 31 42 49 66 93 113 140 183 194 169
Median TT (Days) 138 187 212 310 458 632 770 + + +
Median TT 95% C.I. Lower Bound 127 176 198 291 426 585 704 + + +
Median TT 95% C.I. Upper Bound 147 204 229 330 490 692 841 + + +
U.S. Resident Number of Registrations 4,330 5,013 6,000 7,131 7,826 8,318 9,079 9,884 10,552 10,813
10th Percentile of TT (Days) 6 7 8 11 12 15 21 29 29 30
25th Percentile of TT (Days) 27 40 49 66 95 117 142 186 195 170
Median TT (Days) 120 169 208 310 461 648 773 + + +
Median TT 95% C.I. Lower Bound 112 158 196 291 428 597 704 + + +
Median TT 95% C.I. Upper Bound 129 181 226 331 492 706 847 + + +
Nonresident Alien Number of Registrations 82 70 117 141 144 170 174 192 190 168
10th Percentile of TT (Days) 6 5 5 6 6 6 8 8 10 9
25th Percentile of TT (Days) 38 20 32 22 35 24 58 51 43 33
Median TT (Days) 112 102 99 176 145 120 356 441 742 361
Median TT 95% C.I. Lower Bound 83 50 72 121 89 86 240 254 410 162
Median TT 95% C.I. Upper Bound 208 163 177 319 260 262 578 1,080 + +
Unknown Number of Registrations 402 450 110 67 88 143 290 438 141 155
10th Percentile of TT (Days) 21 10 13 3 4 6 6 9 12 203
25th Percentile of TT (Days) 391 196 284 139 257 149 161 179 + +
Median TT (Days) + + + 1,386 + 992 + + + +
Median TT 95% C.I. Lower Bound + + + 397 + 453 + + + +
Median TT 95% C.I. Upper Bound + + + + + + + + + +

Source: OPTN/SRTR Data as of August 1, 2002.
(+) = Not determined due to insufficient follow-up; fewer than this percentile have transplanted.
 
TT = Time to Transplant in days.
This table takes a cohort of waiting list registrations and shows how long it takes for 10%, 25%, and 50% (the median) of those patients to be transplanted. These tables take the point of view of a patient who has
just been registered on a waiting list and take into account all of the things that can happen to the patient
after wait listing, including receiving a transplant, being removed from the waiting list, and dying.
See Technical Notes chapter for a full discussion of the methods used for this table.

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