Jinyao Zhang

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Mortality rates for maintenance hemodialysis patients are much higher than the general population and are even greater soon after starting dialysis. Here we analyzed mortality patterns in 86,886 patients in 11 countries focusing on the early dialysis period using data from the Dialysis Outcomes and Practice Patterns Study, a prospective cohort study of(More)
BACKGROUND Longer dialysis session length (treatment time, TT) has been associated with better survival among hemodialysis (HD) patients. The impact of TT on clinical markers that may contribute to this survival advantage is not well known. METHODS Using data from the international Dialysis Outcomes and Practice Patterns Study, we assessed the association(More)
No effective interventions to reduce risk for new-onset diabetes after transplantation (NODAT), a condition associated with postoperative hyperglycemia and reduced patient and graft survival, have been established. In this 1-year, proof-of-concept clinical trial, we randomly assigned 50 renal transplant recipients to immediate-postoperative isophane insulin(More)
BACKGROUND Most hemodialysis patients worldwide are treated with bicarbonate dialysis using sodium bicarbonate as the base. Few studies have assessed outcomes of patients treated with different dialysate bicarbonate levels, and the optimal concentration remains uncertain. STUDY DESIGN The Dialysis Outcomes and Practice Patterns Study (DOPPS) is an(More)
BACKGROUND Although dialysis after kidney transplant failure (TF) is common, the outcomes of these patients remain unclear. We compared outcomes of TF patients with transplant-naïve (TN) patients wait-listed for kidney transplantation. METHODS We used data from the Dialysis Outcomes and Practice Patterns Study (DOPPS), including laboratory markers and(More)
KDOQI practice guidelines recommend predialysis blood pressure <140/90 mm Hg; however, most prior studies had found elevated mortality with low, not high, systolic blood pressure. This is possibly due to unmeasured confounders affecting systolic blood pressure and mortality. To lessen this bias, we analyzed 24,525 patients by Cox regression models adjusted(More)
Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms Corresponding Author: Bruce M. Robinson, 340 East Huron, Suite 300, Ann Arbor, MI 48104, Phone: 734.665.4108, Fax:(More)
Treatment preferences of groups (e.g., clinical centers) have often been proposed as instruments to control for unmeasured confounding-by-indication in instrumental variable (IV) analyses. However, formal evaluations of these group-preference-based instruments are lacking. Unique challenges include the following: (i) correlations between outcomes within(More)
DEDICATION To my parents, who always supported me unconditionally To my wife Chun, the sweetest girl in the world iii ACKNOWLEDGEMENTS Special thanks are due to Dingzhou Li, who has provided constant help and many inspiring suggestions to this study. I also like to thank Dr. Lawrence Hudson and Dr. Daniela Minecan for their extensive collaborating in(More)