Records of mortality during the first year of life of 8,642 lambs from a composite population at the U.S. Meat Animal Research Center were studied using survival and logistic analyses. The traditional logistic approach analyzes the binary response of whether or not a lamb survived until a particular time point, thus disregarding information on the actual age at death. Survival analysis offers a...

Abstract BACKGROUND To evaluate the impact of extent resection (EOR) contrast-enhancing (CE) and nonenhancing (NE) tumors in types adult-type diffuse gliomas according to 2021 WHO classification. METHODS Total 1,196 glioma patients diagnosed between 2001 from a single institution were enrolled (183 with isocitrate dehydrogenase [IDH]-mutant 1p/19q codeleted oligodendroglioma [herein oligodendro...

OBJECTIVE Survival time is an important type of outcome variable in treatment research. Currently, limited guidance is available regarding performing mediation analyses with survival outcomes, which generally do not have normally distributed errors, and contain unobserved (censored) events. We present considerations for choosing an approach, using a comparison of semi-parametric proportional ha...

Patients with a history of diabetes mellitus (DM) have worse survival than those without DM after liver transplantation. However, the effect of liver grafts from DM donors on the post-transplantation survival of recipients is unclear. Using the Scientific Registry of Transplant Recipients database (2004-2008), 25,413 patients were assessed. Among them, 2,469 recipients received grafts from dono...

Strategies to increase expanded criteria donor (ECD) transplantation are needed. We quantified the extent to which ECD kidneys provide recipients with a lifetime of allograft function by determining the difference between patient survival and death-censored allograft survival (graft survival). Initial analyses compared 5-year outcomes in the Eurotransplant Senior Program (European) and the Unit...