According to estimates, approximately 40 % of dialysis patients suffer from primary kidney disease, and the number of such patients is roughly steady. However, the number of patients receiving dialysis due to secondary kidney disorders caused by diseases such as diabetes and high blood pressure has been on the rise in recent years.
據估算，洗腎病人中屬於原發性腎臟疾病者約佔 4 成，人數大致維持穩定；但因糖尿病、高血壓等疾病牽連導致洗腎的「次發性」比例，近年卻越來越高。