نتایج جستجو برای: modified log rank test
تعداد نتایج: 1157753 فیلتر نتایج به سال:
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...
To compare the log odds of positive lymph nodes (LODDS) with the number of positive lymph nodes (pN), lymph node ratio (LNR), removed lymph node (RLN) count, and negative lymph node (NLN) count in determining the prognosis of patients with esophageal squamous cell carcinoma (ESCC) after esophagectomy. The records of patients with ESCC who received esophagectomy were retrospectively reviewed. Th...
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...
BACKGROUND The main aim of this prospective study was to evaluate the efficacy of drug-eluting beads with irinotecan (DEBIRI) for liver metastases from colorectal cancer. Secondary aims were to evaluate survival and toxicity. METHODS Twenty-five patients with metastases in <50% of the liver and without extrahepatic involvement were enrolled. Treatment response assessment was performed by mult...
background and objectives : resistance among bacterial isolates is the leading cause of increased mortality and morbidity worldwide. carbapenems once thought to be effective are becoming ineffective mostly due to the emergence of carbapenemase. this study was designed to determine in vitro efficacy of modified hodge test for detection of carbapenemase production in gram negative rods. material ...
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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