نتایج جستجو برای: log rank test
تعداد نتایج: 932838 فیلتر نتایج به سال:
PurposeIt is not known whether donor-transmitted coronary artery (DTCAD) disease after heart transplantation (HT) and its severity have prognostic implications. Our aim to assess if patients with multivessel significant-DTCAD (s-DTCAD) left anterior descendent (LAD) s-DTCAD worse prognosis at long-term follow-up.MethodsRetrospective study of HT > 18-year-old between 2008-2018 in 11 centers Spai...
background& objective: the prevalence and annual incidence of end stage renal disease among 60 million iranians is about 15000 and 3175 (53 patients per million), respectively. the first renal transplantation was performed in shiraz, iran in 1967. iran has the most successful renal transplant program in the middle east region. the renal transplant activity of the country has reached 24 renal...
Those who use SAS Proc Lifetest know that it performs the two best known non-parametric tests to compare survival distributions – the Log Rank Test and the Wilcoxon-Gehan Test. In fact, however, these two tests are actually two members of a large class of linear rank tests. These tests are all equally valid, but will have different power. The specific linear rank test having greatest power wil...
normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 aim : the present study aimed to investigate the influence of histological factors on survival of patients with esophageal cancer. background : esophageal cancer is almost the common form of malignancy in the eastern world. patients and methods : through a retrospective cohort study a consecutive series of 134 patients wit...
We evaluated the prognostic significance of p53 mutations and an allelic loss of chromosome 3p in 71 patients with non-small cell lung cancer who underwent potentially curative resection. p53 mutations were detected in 35 cases (49%), while 3p deletions were observed in 34 of 70 informative cases (49%). The presence of the p53 mutation was associated with a shortened survival in all patients (P...
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