نتایج جستجو برای: modified log rank test
تعداد نتایج: 1157753 فیلتر نتایج به سال:
We show that the modified log-Sobolev constant for a natural Markov chain which converges to an $r$-homogeneous strongly log-concave distribution is at least $1/r$. Applications include sharp mixing time bound bases-exchange walk matroids, and concentration Lipschitz functions over these distributions.
INTRODUCTION Among patients with acute myeloid leukemia (AML), the DACO-016 randomized study showed reduction in mortality for decitabine [Dacogen(®) (DAC), Eisai Inc., Woodcliff Lake, NJ, USA] compared with treatment choice (TC): at primary analysis the hazard ratio (HR) was 0.85 (95% confidence interval 0.69-1.04; stratified log-rank P = 0.108). With two interim analyses, two-sided alpha was ...
OBJECTIVE The objective of our study was to evaluate response assessment and predict clinical outcome in patients with metastatic renal cell carcinoma (RCC) receiving antiangiogenic targeted therapy. Target lesions were assessed on routine contrast-enhanced CT (CECT) images obtained during the portal venous phase using new response criteria. MATERIALS AND METHODS Standard CECT examinations of...
While the commonly used log-rank test for survival times between 2 groups enjoys many desirable properties, sometimes the log-rank test and its related linear rank tests perform poorly when sample sizes are small. Similar concerns apply to interval estimates for treatment differences in this setting, though their properties are less well known. Standard permutation tests are one option, but the...
To determine the clinical significance of BCL-2 expression in Hodgkin-Reed-Sternberg (HRS) cells of classical Hodgkin disease (cHD), we correlated its expression with presenting clinical and laboratory features and failure-free survival (FFS). Eligible patients were untreated and negative for HIV-1; they had biopsyproven cHD. BCL-2 expression was determined immunohistochemically in available pr...
BACKGROUND The use of tacrolimus (TAC) in patients after heart transplantation (HTX) has increased over the last few years. AIM In this retrospective study, we evaluated the effects of a TAC (conventional and extended-release TAC)-based immunosuppressive therapy regarding rejection profile in comparison to a cyclosporine A (CSA)-based regimen in patients after HTX. METHODS The data of 233 p...
This paper concerns the Log-rank test for comparing survival curves of neonatal mortality characteristic groups in River Nile State, Sudan. In this paper, log-rank is used to compare two or more characteristics newborn associated with death after using Kaplan-Meier methods estimate and graph variable interest as (sex newborn, weight gestational age, mode delivery resident type), at hospital sta...
OBJECTIVES Comparison of the immediate and long-term results of three different extrathoracic arterial reconstruction procedures for subclavian obstructive disease. DESIGN Retrospective analysis of 51 extrathoracic subclavian artery reconstructions in 49 patients performed in a single centre over an 18-year period (mean follow-up 64 months, range 3-192). METHODS Carotid-subclavian bypass (C...
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