Evidence map›Paper›PMID 27054651›Full record

ArticleEpidemiology (Cambridge, Mass.)2016

Multiple Overimputation to Address Missing Data and Measurement Error: Application to HIV Treatment During Pregnancy and Pregnancy Outcomes.

Angela M Bengtson, Daniel Westreich, Patrick Musonda, Audrey Pettifor, Carla Chibwesha, Benjamin H Chi, Bellington Vwalika, Brian W Pence, Jeffrey S A Stringer, William C Miller

Abstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 33% of its field
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

4 citing papers in PubMed, 5 citations in OpenAlex.

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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

10 authors at 1 institution in 1 country.

Angela M BengtsonFrom the aDepartment of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC; bUniversity of Zambia, Lusaka, Zambia; cDepartment of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, NC; dCentre for Infectious Disease Research in Zambia, Lusaka, Zambia; and eDepartment of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC.
Daniel Westreich
Patrick Musonda
Audrey Pettifor
Carla Chibwesha
Benjamin H Chi
Bellington Vwalika
Brian W Pence
Jeffrey S A Stringer
William C Miller
University of North Carolina at Chapel Hill · US

Funding

Virology, Immunology, and Microbiology CoreP30AI050410 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI DAVID M. MARGOLIS · 2001 to 2026
$76.9M
Training in Sexually Transmitted Infections and HIVT32AI007001 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SENA-SOBERANO, ARLENE C. · 1985 to 2025
$10.9M
Research Services CoreP2CHD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KAREN B GUZZO · 2015 to 2026
$9.6M
Science/Technical CoreP2CHD041020 · NICHD · BROWN UNIVERSITY · PI ZHENCHAO QIAN · 2016 to 2026
$7.6M
NIAID NIH HHS P30 AI050410NIAID NIH HHS T32 AI007001NICHD NIH HHS P2C HD041020NICHD NIH HHS P2C HD050924
6 · The paper itself

Abstract

backgroundInvestigations of the association of combination antiretroviral therapy (ART) with pregnancy outcomes often rely on routinely collected clinical data, which are prone to missing data and measurement error. Measurement error in gestational age may bias the relation between combination ART and gestational age-based outcomes.

methodsWe demonstrate the use of multiple overimputation to address missing data and measurement error in gestational age. Using routinely collected clinical data from public health facilities in Lusaka, Zambia, we multiply imputed missing data and multiply overimputed observed values of gestational age. Poisson models with robust variance estimators were used to estimate risk ratios (RRs) for the associations of duration of combination ART with small for gestational age (SGA) and preterm birth. We compared results from a complete-case analysis, using multiple imputation to address missing data only and using multiple overimputation to address missing data and measurement error.

resultsIn the complete-case analysis, there was no evidence of an association between duration of combination ART and SGA or preterm birth. When we performed multiple overimputation, RRs for SGA moved past the null, but remained imprecise. For preterm birth, RRs for 9-32 weeks of combination ART moved away from the null as the variance due to measurement error increased.

conclusionWhen we used multiple overimputation to account for measurement error and missing data, we observed an increased risk of preterm birth with longer duration of combination ART. Future analyses examining associations between combination ART and pregnancy outcomes should consider using multiple overimputation to address measurement error in gestational age.

Indexed as

Statistics as TopicAdultAnti-HIV AgentsFemaleGestational AgeHIV InfectionsHumansInfant, NewbornInfant, Small for Gestational AgePregnancyPregnancy Complications, InfectiousPregnancy OutcomePremature BirthRisk FactorsYoung AdultZambiaAnti-HIV Agents

Identifiers

PMID27054651
PMCPMC5019179
OpenAlexW2338372497

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.