Evidence map›Paper›PMID 31231451›Full record

ArticleElectronic journal of statistics2018

Categorizing a continuous predictor subject to measurement error.

Betsabé G Blas Achic, Tianying Wang, Ya Su, Victor Kipnis, Kevin Dodd, Raymond J Carroll

Abstract read
In one paragraph

Article in Electronic journal of statistics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Betsabé G Blas AchicDepartamento de Estatística, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife-PE-Brasil, CEP: 50670-901.
Tianying WangDepartment of Statistics, Texas A&M University, 3143 TAMU, College Station, TX 77843-3143.
Ya SuDepartment of Statistics, University of Kentucky, Lexington, KY, 40536-0082.
Victor KipnisBiometry Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD.
Kevin DoddBiometry Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD.
Raymond J CarrollDepartment of Statistics, Texas A&M University, 3143 TAMU, College Station, TX 77843-3143, and School of Mathematical Sciences, University of Technology Sydney, Broadway NSW 2007.

Funding

Measurement Error, Nutrition, Physical Activity and CancerU01CA057030 · NCI · TEXAS A&M UNIVERSITY · PI CARROLL, RAYMOND J. · 2015 to 2019
$2.8M
NCI NIH HHS U01 CA057030
6 · The paper itself

Abstract

Epidemiologists often categorize a continuous risk predictor, even when the true risk model is not a categorical one. Nonetheless, such categorization is thought to be more robust and interpretable, and thus their goal is to fit the categorical model and interpret the categorical parameters. We address the question: with measurement error and categorization, how can we do what epidemiologists want, namely to estimate the parameters of the categorical model that would have been estimated if the true predictor was observed? We develop a general methodology for such an analysis, and illustrate it in linear and logistic regression. Simulation studies are presented and the methodology is applied to a nutrition data set. Discussion of alternative approaches is also included.

Indexed as

Categorizationdifferential misclassificationepidemiology practiceinverse problemsmeasurement error

Identifiers

PMID31231451
PMCPMC6588013

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.