“…The total numbers of diabetic patients included were 50,298 receiving PD and 71,532 receiving HD. Eight studies were from Asia [10,11,14,16,18,19,21,23], three were from Australia and New Zealand [15,20,22], three were from Europe [17,24,25], one was from North America [13], and one was from South Africa [12]. Several studies were based on the same registry or cohort databases, such [15,20,22], the Korean Health Insurance Review and Assessment Service (HIRA) database [10,19,21,23], and the National Health Insurance Research Database (NHIRD) of Taiwan [11,16].…”