Geographic inequity results in disparate mortality: a multivariate intent-to-treat analysis of liver transplant data.

CONTEXT

The distribution of livers to listed transplant candidates shows substantial geographic inequity.

OBJECTIVE

To compare mortality between the 11 UNOS (United Network of Organ Sharing) regions from the time of listing and to show that the geographic region impacts survival.

DESIGN, SETTING, AND PATIENTS: We studied the data of 1930 adults listed with a Model for End-Stage Liver Disease (MELD) score of 18 for a liver transplant from March 1, 2002 through December 31, 2007. We calculated one- and three-yr survival rates and performed multivariate Cox regression analysis to determine significant risk factors for mortality.

MAIN OUTCOME MEASURES

Patient survival from the time of listing for transplantation.

RESULTS

Actual one-yr mortality rate from the time of listing ranged from 30.5% (Region 2) to 12.9% (Region 4). The three-yr mortality rate ranged from 42.0% (Region 2) to 21.6% (Region 4). Multivariate analysis showed a significant increase in mortality in Region 2 (odds ratio [OR], 1.49; 95% confidence interval [CI], 1.21 to 1.83) and a significant decrease in mortality in Region 3 (OR, 0.74; 95% CI, 0.59 to 0.93).

CONCLUSIONS

We found significant differences in one- and three-yr mortality rates among UNOS regions. Regional disparities significantly affect patient survival and result in national inequality.