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作者：Black, D; Sanders, S; Taylor, L
作者单位：Syracuse University; University System of Maryland; University of Maryland College Park; Carnegie Mellon University
摘要：We examine measurement error in the reporting of higher education in the 1990 Decennial Census and the post-1991 Current Population Survey (CPS). We document that measurement error in the reporting of higher education is prevalent in Census data. Further, these errors violate models of classical measurement error in important ways. The level of education is consistently reported as higher than it is (errors are not mean 0), errors in the reporting of education are correlated with covariates th...
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作者：Huang, Y; Wang, MC
作者单位：Johns Hopkins University; Johns Hopkins Bloomberg School of Public Health
摘要：Recurrent events arise in many longitudinal medical studies where time to a terminal event or failure is the primary endpoint. With incomplete follow-up data, the analysis of recurrent events is a challenge owing to their association with the failure. One specific quantity of interest rarely addressed in the statistical literature is the recurrence frequency at the failure time; an example is hospitalization frequency, which is often used as a rough measure of lifetime medical cost. In this ar...
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作者：Meeden, G
作者单位：University of Minnesota System; University of Minnesota Twin Cities
摘要：Auditors often consider a stratified finite population where each unit is classified as either acceptable or in error. Based on a random sample, the auditor may be required to give an upper confidence bound for the number of units in the population that are in error. In other cases the auditor may need to give a p value for the hypothesis that at least 5% of the units in the population are in error. Frequentist methods for these problems are not straightforward and can be difficult to compute....
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作者：Cook, RD; Setodji, CM
作者单位：University of Minnesota System; University of Minnesota Twin Cities; RAND Corporation
摘要：We propose a test of dimension in multivariate regression. This test is in the spirit of tests on the rank of the coefficient matrix in a multivariate linear model, but it does not require a prespecified model. The test may be particularly useful at the outset of an analysis before a multivariate model is posited, because it can lead to low-dimensional summary plots that are inferred to contain all of the sample information on the multivariate mean function.
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作者：Parmigiani, G; Ashih, HW; Samsa, GR; Duncan, PW; Lai, SM; Matchar, DB
作者单位：Johns Hopkins University; Johns Hopkins University; Johns Hopkins University; Duke University; Duke University; Duke University; University of Kansas; University of Kansas; Duke University
摘要：It is common to assess disability of stroke patients using standardized scales, such as the Rankin Stroke Outcome Scale (RS) and the Barthel Index (BI). The RS, which was designed for applications to stroke, is based on assessing directly the global conditions of a patient. The BI, which was designed for more general applications, is based on a series of questions about the patient's ability to carry out 10 basic activities of daily living. Because both scales are commonly used, but few studie...
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作者：Brookmeyer, R; Blades, N
作者单位：Johns Hopkins University; Johns Hopkins Bloomberg School of Public Health; Jackson Laboratory
摘要：In the fall of 2001 an outbreak of inhalational anthrax occurred in the United States that was the result of bioterrorism. Letters contaminated with anthrax spores were sent through the postal system. In response to the outbreak, public health officials treated over 10,000 persons with antibiotic prophylaxis in the hopes of preventing further morbidity and mortality. No persons receiving the antibiotics subsequently developed disease. The question arises as to how many cases of disease may act...
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作者：Muthén, B; Jo, B; Brown, CH
作者单位：University of California System; University of California Los Angeles; State University System of Florida; University of South Florida
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作者：Claeskens, G; Hjort, NL
作者单位：Texas A&M University System; Texas A&M University College Station; University of Oslo
摘要：A variety of model selection criteria have been developed, of general and specific types. Most of these aim at selecting a single model with good overall properties, for example, formulated via average prediction quality or shortest estimated overall distance to the true model. The Akaike, the Bayesian, and the deviance information criteria, along with many suitable variations, are examples of such methods. These methods are not concerned, however, with the actual use of the selected model, wh...
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作者：Garratt, A; Lee, K; Pesaran, MH; Shin, Y
作者单位：University of Leicester; University of Cambridge; University of Edinburgh
摘要：We argue that probability forecasts convey information on the uncertainties that surround macroeconomic forecasts in a straightforward manner that is preferable to other alternatives, including the use of confidence intervals. Probability forecasts obtained using a small benchmark macroeconometric model and a number of other alternatives are presented and evaluated using recursive forecasts generated over the period 1999q1-2001q1. Out-of-sample probability forecasts of inflation and output gro...
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作者：Ye, ZS; Weiss, RE
作者单位：Eli Lilly; Lilly Research Laboratories; University of California System; University of California Los Angeles
摘要：Dimension reduction in a regression analysis of response y given a p-dimensional vector of predictors x reduces the dimension of x by replacing it with a lower-dimensional linear combination beta'x of the x's without specifying a parametric model and without loss of information about the conditional distribution of y given x. We unify three existing methods, sliced inverse regression (SIR), sliced average variance estimate (SAVE), and principal Hessian directions (pHd), into a larger class of ...
