Results 41 to 50 of about 5,234,127 (383)

Confidence intervals for normalised citation counts: Can they delimit underlying research capability? [PDF]

open access: yesThelwall, 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

open access: yesInternational 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]

open access: yesarXiv, 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  

Comparison of the Frequentist MATA Confidence Interval with Bayesian Model-Averaged Confidence Intervals

open access: yesJournal 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

Assessing the similarity of dose response and target doses in two non-overlapping subgroups [PDF]

open access: yes, 2017
We consider two problems that are attracting increasing attention in clinical dose finding studies. First, we assess the similarity of two non-linear regression models for two non-overlapping subgroups of patients over a restricted covariate space.
Bretz, Frank   +4 more
core   +2 more sources

Pragmatism should Not be a Substitute for Statistical Literacy, a Commentary on Albers, Kiers, and Van Ravenzwaaij (2018)

open access: yesCollabra: Psychology, 2019
Based on the observation that frequentist confidence intervals and Bayesian credible intervals sometimes happen to have the same numerical boundaries (under very specific conditions), Albers et al.
Ladislas Nalborczyk   +2 more
doaj   +1 more source

Comment on "Including Systematic Uncertainties in Confidence Interval Construction for Poisson Statistics" [PDF]

open access: yes, 2003
The incorporation of systematic uncertainties into confidence interval calculations has been addressed recently in a paper by Conrad et al. (Physical Review D 67 (2003) 012002).
C. Giunti   +4 more
core   +2 more sources

A calculator for confidence intervals [PDF]

open access: yesComputer Physics Communications, 2002
A calculator program has been written to give confidence intervals on branching ratios for rare decay modes (or similar quantities) calculated from the number of events observed, the acceptance factor, the background estimate and the associated errors.
openaire   +4 more sources

Mortality among Lifelong Nonsmokers Exposed to Secondhand Smoke at Home: Cohort Data and Sensitivity Analyses [PDF]

open access: yes, 2006
Evidence is growing that secondhand smoke can cause death from several diseases. The association between household exposure to secondhand smoke and disease-specific mortality was examined in two New Zealand cohorts of lifelong nonsmokers (‘‘never smokers’
Blakely, Tony   +3 more
core   +2 more sources

Confidence Interval for Quantile Ratio of the Dagum Distribution

open access: yesRevstat Statistical Journal, 2021
Inequality measures based on ratios of quantiles are frequently applied in economic research, especially to the analysis of income distributions. In the paper, we construct a confidence interval for such measures under the Dagum distribution which has ...
Alina Jędrzejczak   +2 more
doaj   +1 more source

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