Works Published in 2008
Displaying all 12 works
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2008 book
Longitudinal Data Analysis
In Chapman & Hall/CRC, Taylor & Francis Group. Boca Raton, FL: Chapman & Hall/CRC.
Event: at Boca Raton, FL
Source: ORCID
Added: March 29, 2023
2008 journal article
Inventory based allocation policies for flexible servers in serial systems
Annals of Operations Research, 172(1), 1–23.
author keywords: Flexible servers; Server allocation; Throughput
TL;DR:
This work investigates two cases which are different in the way that servers work together when at the same station; namely collaboratively or non-collaboratively, and proves the optimal policy to be such that the servers work Together at a single station at any point in time.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 21, 2021
2008 journal article
Modelling HIV immune response and validation with clinical data
Journal of Biological Dynamics, 2(4), 357–385.
MeSH headings : CD4-Positive T-Lymphocytes / immunology; CD4-Positive T-Lymphocytes / virology; HIV / immunology; HIV Antigens / immunology; HIV Infections / drug therapy; HIV Infections / immunology; HIV Infections / virology; Humans; Immunity / immunology; Models, Immunological; Reproducibility of Results; Viral Load / immunology; Viremia / immunology; Virus Activation / immunology
TL;DR:
This more biologically detailed model can exhibit the phenomenon of transient viremia experienced by some patients on therapy with viral load levels suppressed below the detection limit, and it is shown that treatment to move from a high viral load equilibrium state to an equilibrium state with a lower viral load is not possible for these patients.
(via Semantic Scholar)
europepmc.org (repository)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 23, 2020
2008 book
TL;DR:
This course treats the statistical basis and practical application of linear Models for longitudinal normal data and generalized linear models for longitudinal binary, count, and ordinal data and involves inclusion of random effects in linear models to reflect within-person cross-time correlation.
(via Semantic Scholar)
Source: Crossref
Added: January 23, 2020
2008 chapter
Joint models for longitudinal data
In Chapman & Hall/CRC Handbooks of Modern Statistical Methods (pp. 319–326).
Sources: Crossref, ORCID
Added: January 23, 2020
2008 journal article
What We Want versus What We Can Get: A Closer Look at Failure Time Endpoints for Cardiovascular Studies
Journal of Biopharmaceutical Statistics, 18(2), 370–381.
author keywords: cardiovascular clinical trials; competing risks; composite endpoint; recurrent events
MeSH headings : Cardiovascular Diseases / drug therapy; Cardiovascular Diseases / mortality; Clinical Trials as Topic / methods; Clinical Trials as Topic / statistics & numerical data; Data Interpretation, Statistical; Endpoint Determination / statistics & numerical data; Humans; Models, Statistical; Treatment Outcome
TL;DR:
The use of all-cause mortality and the composite endpoint as the primary endpoint is reviewed and a recurrent composite endpoint is proposed as an alternative primary endpoint.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Sources: Crossref, ORCID
Added: January 20, 2020
2008 journal article
Proximate Cues for a Short-Distance Migratory Species: an Application of Survival Analysis
Journal of Wildlife Management, 72(2), 440–448.
author keywords: American woodcock; Great Lakes region; migration chronology; Scolopax minor; survival analysis
TL;DR:
It is suggested that woodcock use a conservative photoperiod-controlled strategy with proximate modifiers for timing of migration rather than relying on abundance of their primary food, earthworms, which may serve as a navigational aid in piloting and possibly orientation.
(via Semantic Scholar)
Sources: Crossref, ORCID
Added: January 20, 2020
2008 chapter
Non-linear mixed-effects models
In Chapman & Hall/CRC Handbooks of Modern Statistical Methods (pp. 107–141).
Sources: Crossref, ORCID
Added: January 19, 2020
2008 journal article
'Smooth' inference for survival functions with arbitrarily censored data
Statistics in Medicine, 27(26), 5421–5439.
MeSH headings : Clinical Trials as Topic / methods; Computer Simulation; Data Interpretation, Statistical; Disease Progression; Endpoint Determination; Humans; Likelihood Functions; Statistics, Nonparametric; Survival Analysis
TL;DR:
The method is predicated on the mild assumption that the distribution of the random variable has a density that lies in a class of 'smooth' densities whose elements can be represented by an infinite Hermite series, and can result in gains in efficiency over traditional nonparametric methods.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
2008 article
Covariate adjustment for two-sample treatment comparisons in randomized clinical trials: A principled yet flexible approach
Tsiatis, A. A., Davidian, M., Zhang, M., & Lu, X. (2008, October 15). STATISTICS IN MEDICINE, Vol. 27, pp. 4658–4677.
author keywords: baseline variables; clinical trials; covariate adjustment; efficiency; semiparametric theory; variable selection
MeSH headings : Algorithms; Data Interpretation, Statistical; Humans; Randomized Controlled Trials as Topic / statistics & numerical data; Sampling Studies; Statistics, Nonparametric; Treatment Outcome
TL;DR:
App appealing to the theory of semiparametrics is led naturally to a characterization of all treatment effect estimators and to principled, practically feasible methods for covariate adjustment that yield the desired gains in efficiency and that allow covariate relationships to be identified and exploited while circumventing the usual concerns.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
2008 journal article
Improving efficiency of inferences in randomized clinical trials using auxiliary covariates
BIOMETRICS, 64(3), 707–715.
author keywords: covariate adjustment; hypothesis test; k-arm trial; Kruskal-Wallis test; log odds ratio; longitudinal data; semiparametric theory
MeSH headings : Acquired Immunodeficiency Syndrome / drug therapy; Analysis of Variance; Angina, Unstable / blood; Angina, Unstable / drug therapy; Anti-HIV Agents / therapeutic use; Anticoagulants / therapeutic use; Biometry / methods; Humans; Linear Models; Logistic Models; Models, Statistical; Monte Carlo Method; Odds Ratio; Platelet Glycoprotein GPIIb-IIIa Complex / metabolism; Randomized Controlled Trials as Topic / statistics & numerical data; Treatment Outcome
TL;DR:
Taking a semiparametric theory perspective, this work proposes a broadly applicable approach to adjustment for auxiliary covariates to achieve more efficient estimators and tests for treatment parameters in the analysis of randomized clinical trials.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2008 journal article
"Smooth" semiparametric regression analysis for arbitrarily censored time-to-event data
BIOMETRICS, 64(2), 567–576.
author keywords: accelerated failure time model; heteroscedasticity; information criteria; interval censoring; proportional hazards model; proportional odds model; seminonparametric (SNP) density; time-dependent covariates
MeSH headings : Biometry / methods; Computer Simulation; Data Interpretation, Statistical; Models, Statistical; Regression Analysis; Statistics, Nonparametric
TL;DR:
A general framework for regression analysis of time-to-event data subject to arbitrary patterns of censoring is proposed, which allows popular models, such as the proportional hazards, proportional odds, and accelerated failure time models, to be placed in a common framework and provides a principled basis for choosing among them.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
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