全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
中外文文献  中文文献  外文文献
作者:Ann-Kathrin Ozga , Geraldine Rauch
来源:[J].BMC Medical Research Methodology(IF 2.211), 2019, Vol.19 (1), pp.1-16DOAJ
摘要:Abstract Background The rationale for the use of composite time-to-event endpoints is to increase the number of expected events and thereby the power by combining several event types of clinical interest. The all-cause hazard ratio is the standard effect measure for composit...
作者:Ann-Kathrin Ozga , Stella Preussler
来源:[J].BMC Medical Research Methodology(IF 2.211), 2015, Vol.15 (1)Springer
摘要:Abstract(#br) Background(#br)In medical studies with recurrent event data a total time scale perspective is often needed to adequately reflect disease mechanisms. This means that the hazard process is defined on the time since some starting point, e.g. the beginning of some disea...
作者:Ann-Kathrin Ozga , Jan-Patrick Stellmann ...
来源:[J].Journal of Neurology(IF 3.578), 2019, Vol.266 (6), pp.1481-1489Springer
摘要:Abstract(#br) Objective(#br)To analyze the treatment response in patients with primary angiitis of the central nervous system (PACNS).(#br) Methods(#br)In a single-center retrospective observational study, we assessed relapses, remission, and long-term outcome by use of the ...
作者:Ann-Kathrin Ozga , Meinhard Kieser , Geraldine Rauch
来源:[J].2018, Vol.18 (1), pp.2BMC
摘要:Many clinical trials focus on the comparison of the treatment effect between two or more groups concerning a rarely occurring event. In this situation, showing a relevant effect with an acceptable power requires the observation of a large number of patients over a long period of ...
作者:Ann-Kathrin Ozga , Stella Preussler
来源:[J].2015, Vol.15 (1), pp.16BMC
摘要:In medical studies with recurrent event data a total time scale perspective is often needed to adequately reflect disease mechanisms. This means that the hazard process is defined on the time since some starting point, e.g. the beginning of some disease, in contrast to a gap time...
作者:Ann-Kathrin Ozga , Andreas Sommer ...
来源:[J].PLOS ONE(IF 3.73), 2017, Vol.12 (3)PLOS
摘要:The objective of this prospective study was to evaluate whether magnetic resonance imaging (MRI) is equivalent to lateral cephalometric radiographs (LCR, “gold standard”) in cephalometric analysis.;;The applied MRI technique was optimized for short scanning time, high resolu...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×