Works Published in 2001

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2001 journal article

A semiparametric estimator for the proportional hazards model with longitudinal covariates measured with error

BIOMETRIKA, 88(2), 447–458.

By: A. Tsiatis n & M. Davidian n

author keywords: conditional score; measurement error; mixed effects model; regression calibration; semiparametric; survival analysis
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2001 journal article

Robust two-stage estimation in hierarchical nonlinear models

BIOMETRICS, 57(1), 266–272.

By: B. Yeap* & M. Davidian n

author keywords: M-estimation; mixed effects; outliers; repeated measurements
MeSH headings : Air Pollutants / toxicity; Algorithms; Animals; Biometry; Least-Squares Analysis; Nonlinear Dynamics; Ozone / toxicity; Rats; Respiratory System / drug effects; Serotonin / pharmacology
TL;DR: This work proposes a robust two-stage procedure based on Huber's (1981, Robust Statistics) theory of M-estimation to accommodate separately aberrant responses within an experimental unit and subjects deviating from the study population when the usual assumptions of normality are violated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2001 journal article

Linear mixed models with flexible distributions of random effects for longitudinal data

BIOMETRICS, 57(3), 795–802.

By: D. Zhang n & M. Davidian n

author keywords: longitudinal data; multimodality; random effects; seminonparametric density; semiparametric mixed effects model; skewness
MeSH headings : Biometry; Cholesterol / blood; Data Interpretation, Statistical; Humans; Likelihood Functions; Linear Models; Longitudinal Studies
TL;DR: It is demonstrated that standard information criteria may be used to choose the tuning parameter and detect departures from normality, and the approach is illustrated via simulation and using longitudinal data from the Framingham study. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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