Results 31 to 40 of about 617,011 (320)

Do metabolic factors increase the risk of thyroid cancer? a Mendelian randomization study

open access: yesFrontiers in Endocrinology, 2023
BackgroundEpidemiological studies emphasize the link between metabolic factors and thyroid cancer. Using Mendelian randomization (MR), we assessed the possible causal impact of metabolic factors on thyroid cancer for the first time.MethodsSummary ...
Weiwei Liang, FangFang Sun
doaj   +1 more source

Robust Nonparametric Confidence Intervals for Regression-Discontinuity Designs [PDF]

open access: yesEconometrica, 2014
In the regression-discontinuity (RD) design, units are assigned to treatment based on whether their value of an observed covariate exceeds a known cutoff. In this design, local polynomial estimators are now routinely employed to construct confidence intervals for treatment effects. The performance of these confidence intervals in applications, however,
Calonico, Sebastian   +2 more
openaire   +3 more sources

A simple remedy for overprecision in judgment [PDF]

open access: yesJudgment and Decision Making, 2010
Overprecision is the most robust type of overconfidence. We present a new method that significantly reduces this bias and offers insight into its underlying cause.
Uriel Haran   +2 more
doaj   +3 more sources

Evaluation of jackknife and bootstrap for defining confidence intervals for pairwise agreement measures.

open access: yesPLoS ONE, 2011
Several research fields frequently deal with the analysis of diverse classification results of the same entities. This should imply an objective detection of overlaps and divergences between the formed clusters. The congruence between classifications can
Ana Severiano   +4 more
doaj   +1 more source

A Conditional-Heteroskedasticity-Robust Confidence Interval for the Autoregressive Parameter [PDF]

open access: yesReview of Economics and Statistics, 2011
This paper introduces a new confidence interval (CI) for the autoregressive parameter (AR) in an AR(1) model that allows for conditional heteroskedasticity of general form and AR parameters that are less than or equal to unity. The CI is a modification of Mikusheva's (2007a) modification of Stock's (1991) CI that employs the least squares estimator and
Donald W.K. Andrews, Patrik Guggenberger
openaire   +5 more sources

Robust Empirical Bayes Confidence Intervals [PDF]

open access: yes, 2021
We construct robust empirical Bayes confidence intervals (EBCIs) in a normal means problem. The intervals are centered at the usual linear empirical Bayes estimator, but use a critical value accounting for shrinkage. Parametric EBCIs that assume a normal
Armstrong, Timothy B.   +2 more
core  

Use of the bootstrap in analysing cost data from cluster randomised trials: some simulation results

open access: yesBMC Health Services Research, 2004
Background This work has investigated under what conditions confidence intervals around the differences in mean costs from a cluster RCT are suitable for estimation using a commonly used cluster-adjusted bootstrap in preference to methods that utilise ...
Flynn Terry N, Peters Tim J
doaj   +1 more source

Confidence interval based parameter estimation--a new SOCR applet and activity. [PDF]

open access: yesPLoS ONE, 2011
Many scientific investigations depend on obtaining data-driven, accurate, robust and computationally-tractable parameter estimates. In the face of unavoidable intrinsic variability, there are different algorithmic approaches, prior assumptions and ...
Nicolas Christou, Ivo D Dinov
doaj   +1 more source

Which Robust Regression Technique Is Appropriate Under Violated Assumptions? A Simulation Study

open access: yesMethodology, 2023
Ordinary least squares (OLS) regression is widely employed for statistical prediction and theoretical explanation in psychology studies. However, OLS regression has a critical drawback: it becomes less accurate in the presence of outliers and non-random ...
Jaejin Kim, Johnson Ching-Hong Li
doaj   +1 more source

Correction to: Confidence intervals for robust estimates of measurement uncertainty [PDF]

open access: yesAccreditation and Quality Assurance, 2021
The notations Fp,ν1,ν2 and χ2p,ν in Eqs. (1), (2) and (3)
Peter D. Rostron   +2 more
openaire   +1 more source

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