Sparse canonical correlation analysis between an alcohol biomarker and self-reported alcohol consumption [0.03%]
酒精生物标志物和自我报告的饮酒行为之间的稀疏典型相关分析
Shanjun Helian,Babette A Brumback,Robert L Cook
Shanjun Helian
In investigating the correlation between an alcohol biomarker and self-report, we developed a method to estimate the canonical correlation between two high-dimensional random vectors with a small sample size. In reviewing the relevant liter...
Priscilla H Chan,Ronghui Xu,Christina D Chambers
Priscilla H Chan
For right-censored data the accelerated failure time (AFT) model is an alternative to the commonly used proportional hazards regression model. It is a linear model for the (log-transformed) outcome of interest, and is particularly useful fo...
Jongphil Kim,Ji-Hyun Lee
Jongphil Kim
The beta-binomial model has been widely used as an analytically tractable alternative that captures the overdispersion of an intra-correlated, binomial random variable, X. However, the model validation for X has been rarely investigated. As...
A simulation based method for assessing the statistical significance of logistic regression models after common variable selection procedures [0.03%]
一种基于模拟的方法用于在常用的变量筛选过程后评估逻辑回归模型的统计显著性
Tristan R Grogan,David A Elashoff
Tristan R Grogan
Classification models can demonstrate apparent prediction accuracy even when there is no underlying relationship between the predictors and the response. Variable selection procedures can lead to false positive variable selections and overe...
Assessing type I error and power of multistate Markov models for panel data-A simulation study [0.03%]
评估面板数据多重状态马尔可夫模型I型错误和功效的仿真研究
Christy Cassarly,Renee&#x; H Martin,Marc Chimowitz et al.
Christy Cassarly et al.
Ordinal outcomes collected at multiple follow-up visits are common in clinical trials. Sometimes, one visit is chosen for the primary analysis and the scale is dichotomized amounting to loss of information. Multistate Markov models describe...
Analysis of Censored Longitudinal Data with Skewness and a Terminal Event [0.03%]
带有偏斜和终事件的删失纵向数据的分析
Xiao Su,Sheng Luo
Xiao Su
In HIV/AIDS study, the measurements viral load are often highly skewed and left-censored because of a lower detection limit. Furthermore, a terminal event (e.g., death) stops the follow-up process. The time to terminal event may be dependen...
Yang Liu,Ji Li,Xu Zhang
Yang Liu
Truncation is a known feature of bone marrow transplant (BMT) registry data, for which the survival time of a leukemia patient is left truncated by the waiting time to transplant. It was recently noted that a longer waiting time was linked ...
Letter to the editor comments on Groparu-Cojocaru and Doray (2013) [0.03%]
致编辑的信：对Groparu-Cojocaru和Doray(2013)的观点
Fadoua Balabdaoui,Saonli Basu
Fadoua Balabdaoui
Although estimating the five parameters of an unknown Generalized Normal Laplace (GNL) density by minimizing the distance between the empirical and true characteristic functions seems appealing, the approach cannot be advocated in practice....
Meta-analysis of Proportions of Rare Events-A Comparison of Exact Likelihood Methods with Robust Variance Estimation [0.03%]
关于罕见事件比例的元分析：精确似然方法与鲁棒方差估计方法的比较
Yan Ma,Haitao Chu,Madhu Mazumdar
Yan Ma
The conventional random effects model for meta-analysis of proportions approximates within-study variation using a normal distribution. Due to potential approximation bias, particularly for the estimation of rare events such as some adverse...
Evaluating the performance of simultaneous stepwise confidence intervals for the difference between two Poisson rates [0.03%]
同时步进法构造两泊松强度差的置信区间性能研究
Brianna C Bright,Julia N Soulakova
Brianna C Bright
We consider the problem of simultaneously estimating Poisson rate differences via applications of the Hsu and Berger stepwise confidence interval method (termed HBM), where comparisons to a common reference group are performed. We discuss c...