Fig. 1From: Assessing the effect of oral activated vitamin D on overall survival in hemodialysis patients: a landmark analysisFlow diagram shows inclusion of hemodialysis patients for analysis. Numbers of incident hemodialysis patients included for analysis, linked to the outpatient and admission claims from the catastrophic illness certificate (CIC) for end-stage renal disease (ESRD) database within the National Health Insurance Research Database (NHIRD)Back to article page