Dispelling the myth of Asian homogeneity: Improved outcomes of Chinese Americans after kidney transplantation
Asians represent the fastest growing ethnic group in the United States. Despite significant diversity within the group, many transplant studies treat Asians as a homogeneous entity. We compared patient and graft survival among major Asian eth- nicities to determine whether any subgroup has superior out- comes.
Methods: We conducted a retrospective analysis of kidney trans- plants on Asian and White patients between 2001 and 2012. Co- variates included gender, age, comorbidities, and donor category. Primary outcomes included one-year patient and graft survival. Secondary outcomes included delayed graft function (DGF) and rejection as cause of graft loss and death.
Results: Ninety-one Asian patients were identified. Due to the large proportion of Chinese patients (n=37), we grouped other Asians into one entity (n=54) for statistical comparison among Chinese, other Asians, and Whites (n=346). Chinese subjects had significantly lower body mass index (BMI) (p=0.001) and had the lowest proportion of living donors (p>0.001). Patient survival was highest in our Chinese cohort (p>0.001)
Discussion: Our study confirms outcome differences among Asian subgroups in kidney transplantation. Chinese demonstrate better patient survival at one year than Whites and non-Chinese Asians despite fewer live donors. Lower BMI scores may partly explain this. Larger, long-term studies are needed to elucidate outcome disparities among Asian subgroups
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