Evidence map›Paper›PMID 34793531›Full record

ArticlePloS one2021

Analysing microbiome intervention design studies: Comparison of alternative multivariate statistical methods.

Maryia Khomich, Ingrid Måge, Ida Rud, Ingunn Berget

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

16 citing papers in PubMed, 22 citations in OpenAlex.

  1. Review
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  8. PeerJ · 2025
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  15. CombiningFrontiers in microbiology · 2022
    Article
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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 at 1 institution in 1 country.

Maryia KhomichDivision of Food Science, Department of Food Safety and Quality, Nofima - Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.ORCID 0000-0002-6840-5739
Ingrid MågeDivision of Food Science, Department of Raw Materials and Process Optimisation, Nofima - Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.
Ida RudDivision of Food Science, Department of Food Safety and Quality, Nofima - Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.
Ingunn BergetDivision of Food Science, Department of Raw Materials and Process Optimisation, Nofima - Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.
Nofima · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The diet plays a major role in shaping gut microbiome composition and function in both humans and animals, and dietary intervention trials are often used to investigate and understand these effects. A plethora of statistical methods for analysing the differential abundance of microbial taxa exists, and new methods are constantly being developed, but there is a lack of benchmarking studies and clear consensus on the best multivariate statistical practices. This makes it hard for a biologist to decide which method to use. We compared the outcomes of generic multivariate ANOVA (ASCA and FFMANOVA) against statistical methods commonly used for community analyses (PERMANOVA and SIMPER) and methods designed for analysis of count data from high-throughput sequencing experiments (ALDEx2, ANCOM and DESeq2). The comparison is based on both simulated data and five published dietary intervention trials representing different subjects and study designs. We found that the methods testing differences at the community level were in agreement regarding both effect size and statistical significance. However, the methods that provided ranking and identification of differentially abundant operational taxonomic units (OTUs) gave incongruent results, implying that the choice of method is likely to influence the biological interpretations. The generic multivariate ANOVA tools have the flexibility needed for analysing multifactorial experiments and provide outputs at both the community and OTU levels; good performance in the simulation studies suggests that these statistical tools are also suitable for microbiome data sets.

Indexed as

Gastrointestinal MicrobiomeMultivariate AnalysisAnimalsComputer SimulationDatasets as TopicDietHigh-Throughput Nucleotide SequencingHumans

Identifiers

PMID34793531
PMCPMC8601541
OpenAlexW3201611947

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.