Evidence map›Paper›PMID 33778358›Full record

ArticleEnvironmental epidemiology (Philadelphia, Pa.)2021

The Association Between Ambient PM

Unnati Mehta, Sagnik Dey, Sourangsu Chowdhury, Santu Ghosh, Jaime E Hart, Anura Kurpad

Open access · goldAbstract read
In one paragraph

Article in Environmental epidemiology (Philadelphia, Pa.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. The role of antioxidant nutrients in mitigating PMFrontiers in public health · 2025
    Article
  10. Review
  11. In-utero exposure to multiple air pollutants and childhood undernutrition in India.Journal of exposure science & environmental epidemiology · 2024
    Article
  12. Article
  13. Article
  14. Cumulative effect of PMNature communications · 2023
    Article
  15. Article
  16. Article
  17. Effects of PMEnvironmental science and pollution research international · 2022
    Article
  18. Article
  19. Direct and Indirect Effects of Indoor Particulate Matter on Blood Indicators Related to Anemia.International journal of environmental research and public health · 2021
    Article
  20. 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 at 3 institutions in 2 countries.

Unnati MehtaCentre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India.
Sagnik DeyCentre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India.
Sourangsu ChowdhuryCentre for Atmospheric Sciences, Indian Institute of Technology Delhi, New Delhi, India.
Santu GhoshSt. John's Medical College, Bengaluru, India.
Jaime E HartHarvard University T. H. Chan School of Public Health, Boston, Massachusetts.
Anura KurpadSt. John's Medical College, Bengaluru, India.
Harvard University · USIndian Institute of Technology Delhi · INSt.John's Medical College Hospital · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anemia is highly prevalent in India, especially in children. Exposure to ambient fine particulate matter (PM

methodsThe ecological analysis assessed average hemoglobin levels and anemia prevalence (hemoglobin < 11 g/dL considered anemic) by district using multiple linear regression models. The individual-level analysis assessed average individual hemoglobin level and anemia status (yes/no) using generalized linear mixed models to account for clustering by district. Ambient PM

resultsThe district-level ecological analysis found that, for every 10 μg m

conclusionOur results suggest that ambient PM

Identifiers

PMID33778358
PMCPMC7939416
OpenAlexW3120392803

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.