Results 81 to 90 of about 3,758,239 (336)
Optimal sample size determination in adaptive seamless phase II/III design [PDF]
The adaptive seamless phase II/III design combines the conventional separate phases II and III trials into a single trial, and it allows for adaptations (e.g. sample size reassessment and early stopping for futility or success) after the interim analysis.
Xu, Zhongying
core
OSSOS VI. Striking Biases in the detection of large semimajor axis Trans-Neptunian Objects [PDF]
The accumulating, but small, set of large semi-major axis trans-Neptunian objects (TNOs) shows an apparent clustering in the orientations of their orbits.
Alexandersen, Mike +11 more
core +2 more sources
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez +13 more
wiley +1 more source
Sample Size Determination in Randomised Controlled Clinical Trials: A Narrative Review [PDF]
This article summarises efforts towards understanding the calculation of sample size determination in Randomised controlled Clinical Trials (RCTs). Readers would gain insight into the procedures behind sample size calculation in RCTs and its significance.
Rakesh Diliprao Kothavale +3 more
doaj +1 more source
Nested Maximum Entropy Designs for Computer Experiments
Presently, computer experiments with multiple levels of accuracy are widely applied in science and engineering. This paper introduces a class of nested maximum entropy designs for such computer experiments.
Weiyan Mu, Chengxin Liu, Shifeng Xiong
doaj +1 more source
ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell +14 more
wiley +1 more source
Laser Spectroscopic Measurement of Helium Isotope Ratios
A sensitive laser spectroscopic method has been applied to the quantitative determination of the isotope ratio of helium at the level of 3He/4He = 10^-7 - 10^-5.
Bjoklund +24 more
core +1 more source
ABSTRACT Background B‐cell lymphoblastic lymphoma (B‐LBL) represents a rare variety of non‐Hodgkin lymphoma, with limited research on its biology, progression, and management. Methods A retrospective analysis was performed on the clinical characteristics of 256 patients aged ≤18 years who received treatment under the China Net Childhood Lymphoma (CNCL)‐
Zhijuan Liu +20 more
wiley +1 more source
Crossover trials are specifically designed to evaluate treatment effects within individual participants through within-subject comparisons. In a standard AB/BA crossover trial, participants are randomly allocated to one of two treatment sequences: either
Shi-Fang Qiu, Xue-Qin Yu, Wai-Yin Poon
doaj +1 more source
Determination of minimum training sample size for microarray-based cancer outcome prediction-an empirical assessment. [PDF]
The promise of microarray technology in providing prediction classifiers for cancer outcome estimation has been confirmed by a number of demonstrable successes.
Li Shao +4 more
doaj +1 more source

