Evidence map›Paper›PMID 38216314›Full record

ArticleTobacco control2025

Evaluation of the effectiveness of the Indian government's policies to strengthen health warning labels on smokeless tobacco products: findings from the 2010-2019 Tobacco Control Project India Surveys.

Ian Holdroyd, Namrata Puntambekar, Pete Driezen, Shannon Gravely, Anne C K Quah, Steve Shaowei Xu, Prakash C Gupta, Geoffrey T Fong, Mangesh S Pednekar

Abstract read
In one paragraph

Article in Tobacco control, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

9 authors.

Ian HoldroydUniversity of Cambridge School of Clinical Medicine, Cambridge, UK ijh34@cam.ac.uk.ORCID 0000-0001-7011-4116
Namrata PuntambekarHealis Sekhsaria Institute for Public Health, Navi Mumbai, Maharashtra, India.ORCID 0000-0002-4797-7463
Pete DriezenDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.ORCID 0000-0003-2320-0999
Shannon GravelyDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.ORCID 0000-0001-5224-9105
Anne C K QuahDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.
Steve Shaowei XuDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.
Prakash C GuptaHealis Sekhsaria Institute for Public Health, Navi Mumbai, Maharashtra, India.ORCID 0000-0002-1265-0372
Geoffrey T FongDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.
Mangesh S PednekarHealis Sekhsaria Institute for Public Health, Navi Mumbai, Maharashtra, India.

Funding

Vaporized Nicotine Product Initiation Among Youth in the US, Canada, and England: Methods to Predict Uptake and Policy EfficacyP01CA200512 · NCI · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI FONG, GEOFFREY T · 2016 to 2025
$25.3M
Variation in Cigarettes, Tobacco use Behaviors and Exposures in ITC CountriesP01CA138389 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI FONG, GEOFFREY T · 2009 to 2013
$13.4M
Project 3: Policy Effects on Cigarette Design, Emissions &BehaviorP50CA111236 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI CUMMINGS, KENNETH MICHAEL · 2004 to 2009
$8.2M
NCI NIH HHS P01 CA138389NCI NIH HHS P01 CA200512NCI NIH HHS P50 CA111236
6 · The paper itself

Abstract

backgroundSmokeless tobacco (SLT) packaging in India had a single symbolic (a scorpion) health warning label (HWL) in 2009 covering 40% of the front surface. In 2011, it was replaced with four pictorial images. In 2016, HWLs were enlarged to 85% on the front and back. This study aimed to assess the effectiveness of the old (symbolic and smaller images) and larger HWLs.

methodsData were from the Tobacco Control Project India Survey and included respondents who used SLT in Wave 1 (2010-2011, n=5911), Wave 2 (2012-2013, n=5613) and Wave 3 (2018-2019, n=5636). Using a repeated-measures design, weighted logistic regression models assessed whether there were changes in seven HWL effectiveness measures within the domains of awareness, salience, cognitive and behavioural responses. A cohort design was employed to test whether HWL effectiveness in Waves 1 and 2 was associated with quitting SLT in Waves 2 and 3, respectively.

resultsThe 2011 HWL revision did not result in any significant changes in HWL effectiveness. There was no significant change in HWL awareness and salience after larger HWLs were introduced in 2016, but respondents were more likely to consider SLT health risks (Wave 2=17.9%, Wave 3=33.6%, p<0.001) and quitting SLT (Wave 2=18.9%, Wave 3=36.5, p<0.001). There was no change in HWLs stopping SLT use (Wave 2=36.6%, Wave 3=35.2%, p=0.829); however, respondents were more likely to avoid looking at HWLs (Wave 2=10.1%, Wave 3=40.2%, p<0.001). Effectiveness of older, symbolic and smaller pictorial HWLs was not associated with quitting SLT. DISCUSSION: There was no significant change in HWL effectiveness following the revision from a symbolic to a pictorial image, but enlarging pictorial images resulted in some improved cognitive and behavioural effects. Results suggested wear-out of HWL salience and that the effectiveness of warnings depends on both their design and time since implementation.

Indexed as

Health PolicyProduct LabelingTobacco, SmokelessAdolescentAdultFemaleHumansIndiaMaleMiddle AgedSurveys and QuestionnairesTobacco ControlYoung AdultNon-cigarette tobacco productsPackaging and LabellingPublic policy

Identifiers

PMID38216314
PMCPMC11239794

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.