نتایج جستجو برای: log rank test
تعداد نتایج: 932838 فیلتر نتایج به سال:
We study the log-rank conjecture from perspective of point-hyperplane incidence geometry. formulate following conjecture: Given a point set in $\mathbb{R}^d$ that is covered by constant-sized sets parallel hyperplanes, there exists an affine subspace accounts for large (i.e., $2^{-{\operatorname{polylog}(d)}}$) fraction incidences. Alternatively, our may be interpreted linear-algebraically as f...
We retrospectively analyzed the association between mean platelet volume (MPV) and prognosis in 62 newly diagnosed multiple myeloma (MM) patients. The associations between MPV and clinical characteristics were assessed. The log-rank test and the Cox proportional hazards model were used to evaluate the effect of MPV on survival. A MPV value of 8.50 fl was considered to be the optimal cut-off val...
Results During a follow-up period of 47.2 21.8 months (range 4 to 82 months), 49 patients experienced major adverse cardiac events (MACE). The difference in ED prevalence between patients with and those without MACE was significant (61.2% vs. 36.4%; p 0.001). Cox regression analysis showed that ED predicted MACE (hazard ratio [HR] 2.1; 95% confidence interval [CI] 1.6 to 2.6; p 0.001). Among pa...
Adaptive treatment strategies (ATSs) more closely mimic the reality of a physician's prescription process where the physician prescribes a medication to his/her patient, and based on that patient's response to the medication, modifies the treatment. Two-stage randomization designs, more generally, sequential multiple assignment randomization trial designs, are useful to assess ATSs where the in...
BACKGROUND The optimal sequencing of chemotherapy and radiotherapy after breast surgery was largely studied but remains controversial. Concurrent chemo-radiotherapy is a valuable method for adjuvant treatment of breast cancer which is under ongoing research program in our hospital. We are evaluating the feasibility of the concomitant use of chemotherapy retrospectively. METHODS Two hundred fo...
Bayesian rank-based hypothesis testing for the rank sum test, the signed rank test, and Spearman's ρ
BACKGROUND Loss of 18q22.3 is a prognostic marker in pancreatic ductal adenocarcinoma (PDAC). This study investigated genes encoded by this cytoband. METHODS We studied mRNA/protein expression in radically resected (n = 130) and metastatic patients (n = 50). The role of CYB5A was tested in 11 PDAC cell lines and five primary cultures through retrovirus-mediated upregulation and small interfer...
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