Evidence map›Paper›PMID 34472591›Full record

ArticleBriefings in bioinformatics2022

Comparison of imputation and imputation-free methods for statistical analysis of mass spectrometry data with missing data.

Sandra Taylor, Matthew Ponzini, Machelle Wilson, Kyoungmi Kim

Abstract read
In one paragraph

Article in Briefings in bioinformatics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

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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

4 authors.

Sandra TaylorDivision of Biostatistics, School of Medicine at the University of California, Davis, 2921 Stockton Boulevard, Suite 1400, Sacramento, CA 95817, USA.ORCID 0000-0001-7811-812X
Matthew PonziniDivision of Biostatistics, School of Medicine at the University of California, Davis, 2921 Stockton Boulevard, Suite 1400, Sacramento, CA 95817, USA.
Machelle WilsonDivision of Biostatistics, School of Medicine at the University of California, Davis, 2921 Stockton Boulevard, Suite 1400, Sacramento, CA 95817, USA.
Kyoungmi KimDivision of Biostatistics, School of Medicine at the University of California, Davis, 2921 Stockton Boulevard, Suite 1400, Sacramento, CA 95817, USA.

Funding

UC Davis Clinical and Translational Science CenterUL1TR001860 · NCATS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI KENYON, NICHOLAS J., LYLES, COURTNEY REES · 2016 to 2025
$47.3M
UC Davis Environmental Health Sciences Core CenterP30ES023513 · NIEHS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI Ameer Taha · 2015 to 2026
$26.0M
TRANSLOCATION OF p66Shc: KINETICS, FUNCTION, APOPTOSISP01AG025532 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI KIM, KYOUNGMI · 2007 to 2017
$12.1M
Reversing the epigenetic code of aging through ketogenic dietsP01AG062817 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI RAMSEY, JON J. · 2019 to 2023
$11.4M
Research Project: Pathologic Significance of Maternal AutoantibodiesP50HD103526 · NICHD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI LEONARD J. ABBEDUTO, Melissa Dawn Bauman · 2020 to 2026
$9.7M
Rodent Behavior CoreU54HD079125 · NICHD · UNIVERSITY OF CALIFORNIA AT DAVIS · PI ABBEDUTO, LEONARD J. · 2013 to 2019
$8.5M
NCATS NIH HHS UL1 TR001860NIA NIH HHS P01 AG062817NICHD NIH HHS P50 HD103526NICHD NIH HHS U54 HD079125NIEHS NIH HHS P30 ES023513
6 · The paper itself

Abstract

Missing values are common in high-throughput mass spectrometry data. Two strategies are available to address missing values: (i) eliminate or impute the missing values and apply statistical methods that require complete data and (ii) use statistical methods that specifically account for missing values without imputation (imputation-free methods). This study reviews the effect of sample size and percentage of missing values on statistical inference for multiple methods under these two strategies. With increasing missingness, the ability of imputation and imputation-free methods to identify differentially and non-differentially regulated compounds in a two-group comparison study declined. Random forest and k-nearest neighbor imputation combined with a Wilcoxon test performed well in statistical testing for up to 50% missingness with little bias in estimating the effect size. Quantile regression imputation accompanied with a Wilcoxon test also had good statistical testing outcomes but substantially distorted the difference in means between groups. None of the imputation-free methods performed consistently better for statistical testing than imputation methods.

Indexed as

Research DesignBiasCluster AnalysisMass Spectrometryimputationmass spectrometrymetabolomicsmissing datasample size

Identifiers

PMID34472591
PMCPMC8769695

What OpenQuestion holds

Textmetadata
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.