Literature DB >> 18689428

When it is better to estimate a slope with only one point.

R Thiébaut1, S Walker.   

Abstract

When investigating the change in a biomarker, it is often believed that at least two measurements are needed from each participant, and that those with only one measurement should be excluded. In this short note, we explain why this could lead to imprecise and biased estimates. Furthermore, we discuss a standard statistical method that handles such issues.

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Year:  2008        PMID： 18689428      PMCID： PMC2738849          DOI： 10.1093/qjmed/hcn099

Source DB:  PubMed          Journal:  QJM        ISSN： 1460-2393


  10 in total

1.  Impact of missing data due to selective dropouts in cohort studies and clinical trials.

Authors:  Giota Touloumi; Stuart J Pocock; Abdel G Babiker; Janet H Darbyshire
Journal:  Epidemiology       Date:  2002-05       Impact factor: 4.822

2.  Analyzing incomplete longitudinal clinical trial data.

Authors:  Geert Molenberghs; Herbert Thijs; Ivy Jansen; Caroline Beunckens; Michael G Kenward; Craig Mallinckrodt; Raymond J Carroll
Journal:  Biostatistics       Date:  2004-07       Impact factor: 5.899

3.  Missing data.

Authors:  Douglas G Altman; J Martin Bland
Journal:  BMJ       Date:  2007-02-24

4.  Multiple imputation: current perspectives.

Authors:  Michael G Kenward; James Carpenter
Journal:  Stat Methods Med Res       Date:  2007-06       Impact factor: 3.021

5.  Missing data in longitudinal studies.

Authors:  N M Laird
Journal:  Stat Med       Date:  1988 Jan-Feb       Impact factor: 2.373

6.  Unbalanced repeated-measures models with structured covariance matrices.

Authors:  R I Jennrich; M D Schluchter
Journal:  Biometrics       Date:  1986-12       Impact factor: 2.571

7.  Random-effects models for longitudinal data.

Authors:  N M Laird; J H Ware
Journal:  Biometrics       Date:  1982-12       Impact factor: 2.571

Review 8.  Population pharmacokinetics. Theory and clinical application.

Authors:  B Whiting; A W Kelman; J Grevel
Journal:  Clin Pharmacokinet       Date:  1986 Sep-Oct       Impact factor: 6.447

9.  A practical approach to adjusting for attrition bias in HIV clinical trials with serial marker responses.

Authors:  A Cozzi Lepri; G D Smith; A Mocroft; C A Sabin; R W Morris; A N Phillips
Journal:  AIDS       Date:  1998-07-09       Impact factor: 4.177

10.  Determinants of response to first HAART regimen in antiretroviral-naïve patients with an estimated time since HIV seroconversion.

Authors:  R Thiébaut; H Jacqmin-Gadda; S Walker; C Sabin; M Prins; J Del Amo; K Porter; F Dabis; G Chêne
Journal:  HIV Med       Date:  2006-01       Impact factor: 3.180
  10 in total
  5 in total

1.  First-year lymphocyte T CD4+ response to antiretroviral therapy according to the HIV type in the IeDEA West Africa collaboration.

Authors:  Julia Drylewicz; Serge Eholie; Moussa Maiga; Djimon Marcel Zannou; Papa Salif Sow; Didier K Ekouevi; Kevin Peterson; Emmanuel Bissagnene; François Dabis; Rodolphe Thiébaut
Journal:  AIDS       Date:  2010-04-24       Impact factor: 4.177

2.  Sex and Glomerular Filtration Rate Trajectories in Children.

Authors:  Stéphanie Bonnéric; Geeta Karadkhele; Cécile Couchoud; Rachel E Patzer; Larry A Greenbaum; Julien Hogan
Journal:  Clin J Am Soc Nephrol       Date:  2020-02-28       Impact factor: 8.237

3.  Stunting and growth velocity of adolescents with perinatally acquired HIV: differential evolution for males and females. A multiregional analysis from the IeDEA global paediatric collaboration.

Authors:  Julie Jesson; Michael Schomaker; Karen Malasteste; Dewi K Wati; Azar Kariminia; Mariam Sylla; Kouakou Kouadio; Shobna Sawry; Mwangelwa Mubiana-Mbewe; Samuel Ayaya; Rachel Vreeman; Catherine C McGowan; Marcel Yotebieng; Valériane Leroy; Mary-Ann Davies
Journal:  J Int AIDS Soc       Date:  2019-11       Impact factor: 5.396

4.  Adult quality of life patterns and trajectories during the COVID-19 pandemic in Germany.

Authors:  Caroline Cohrdes; Britta Wetzel; Rüdiger Pryss; Harald Baumeister; Kristin Göbel
Journal:  Curr Psychol       Date:  2022-09-30

5.  Longitudinal Bone Loss Occurs at the Radius in CKD.

Authors:  Pierre-Emmanuel Cailleaux; Agnes Ostertag; Marie Metzger; Bénédicte Stengel; Julie Boucquemont; Pascal Houillier; Martin Flamant; Pablo Ureña-Torres; Martine Cohen-Solal
Journal:  Kidney Int Rep       Date:  2021-03-31
  5 in total

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