Results 31 to 40 of about 3,781,470 (370)
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose MRI is increasingly used for brain and head and neck radiotherapy treatment planning due to its superior soft tissue contrast. Flexible array coils can be arranged to encompass treatment immobilization devices, which do not fit in diagnostic head/neck coils. Selecting a flexible coil arrangement to replace a diagnostic coil should rely
Evangelia Kaza +6 more
wiley +1 more source
A justification of conditional confidence intervals [PDF]
Electronic Journal of Statistics, 2021 To quantify uncertainty around point estimates of conditional objects such as conditional means or variances, parameter uncertainty has to be taken into account. Attempts to incorporate parameter uncertainty are typically based on the unrealistic assumption of observing two independent processes, where one is used for parameter estimation, and the ...
Alexander Heinemann +2 more
openaire +7 more sources
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial Monte Carlo dose engine.
Yuki Tominaga +5 more
wiley +1 more source
Comparison of confidence interval methods for an intra-class correlation coefficient (ICC)
BMC Medical Research Methodology, 2014 BackgroundThe intraclass correlation coefficient (ICC) is widely used in biomedical research to assess the reproducibility of measurements between raters, labs, technicians, or devices.
semanticscholar +1 more source
Simple Buehler-optimal confidence intervals on the average success probability of independent Bernoulli trials [PDF]
arXiv, 2022 One-sided confidence intervals are presented for the average of non-identical Bernoulli parameters. These confidence intervals are expressed as analytical functions of the total number of Bernoulli games won, the number of rounds and the confidence level. Tightness of these bounds in the sense of Buehler, i.e.
arxiv
The shortest confidence interval for Poisson mean [PDF]
arXiv, 2021 The existence of the shortest confidence interval for Poisson mean is shown. The method of obtaining such an interval is presented as well.
arxiv
Confidence intervals for normalised citation counts: Can they delimit underlying research capability? [PDF]
Thelwall, M. (2017). Confidence intervals for normalised citation
counts: Can they delimit underlying research capability? Journal of
Informetrics, 11(4), 1069-1079. doi:10.1016/j.joi.2017.09.002, 2017 Normalised citation counts are routinely used to assess the average impact of research groups or nations. There is controversy over whether confidence intervals for them are theoretically valid or practically useful. In response, this article introduces the concept of a group's underlying research capability to produce impactful research.
arxiv +1 more source
Fixed-width confidence interval for a lognormal mean
International Journal of Mathematics and Mathematical Sciences, 2002 We consider the problem of constructing a fixed-width confidence interval for a lognormal mean. We give a Birnbaum and Healy type two-stage procedure to construct such a confidence interval. We discuss some asymptotic properties of the procedure. A three-
Makoto Aoshima, Zakkula Govindarajulu
doaj +1 more source
Exact-corrected confidence interval for risk difference in noninferiority binomial trials [PDF]
arXiv, 2021 A novel confidence interval estimator is proposed for the risk difference in noninferiority binomial trials. The confidence interval is consistent with an exact unconditional test that preserves the type-I error, and has improved power, particularly for smaller sample sizes, compared to the confidence interval by Chan & Zhang (1999).
arxiv
Journal of Probability and Statistics, 2015 Model averaging is a technique used to account for model uncertainty, in both Bayesian and frequentist multimodel inferences. In this paper, we compare the performance of model-averaged Bayesian credible intervals and frequentist confidence intervals ...
Daniel Turek
doaj +1 more source