Evidence map›Paper›PMID 40477343›Full record

ArticleAnthropocene2020

Ambient air quality of a less industrialized region of India (Kerala) during the COVID-19 lockdown.

Jobin Thomas, P J Jainet, K P Sudheer

Abstract read
In one paragraph

Article in Anthropocene, 2020. 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
–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

4 citing papers in PubMed.

  1. CO and NOEnvironmental science and pollution research international · 2026
    Article
  2. Article
  3. Impacts of Covid-19 interventions on air quality: evidence from Brazilian metropolitan regions.International journal of environmental science and technology : IJEST · 2023
    Article
  4. 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

3 authors.

Jobin ThomasDepartment of Civil Engineering, Indian Institute of Technology Madras, Chennai, 600 036, India.
P J JainetKSCSTE-Centre for Water Resources Development and Management, Kozhikode, 673 571, Kerala, India.
K P SudheerDepartment of Civil Engineering, Indian Institute of Technology Madras, Chennai, 600 036, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study assesses the effect of lockdown, due to the coronavirus disease (COVID-19) pandemic, on the concentration of different air pollutants and overall air quality of a less industrialized region (Kerala) of India. We analysed data from four ambient air quality stations over three years (January to May, 2018-2020) with pairwise comparisons, trend analysis, etc. Results indicated unprecedented reduction in the concentration of the air pollutants: nitrogen dioxide, NO

Indexed as

Air qualityCOVID-19IndiaKeralaLockdownPandemic

Identifiers

PMID40477343
PMCPMC7699028

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.