Evidence map›Paper›PMID 36347620›Full record

SynthesisTobacco control2024

Critical appraisal of interventional clinical trials assessing heated tobacco products: a systematic review.

Sophie Braznell, Amber Van Den Akker, Chris Metcalfe, Gemma M J Taylor, Jamie Hartmann-Boyce

Abstract readSystematic Review
In one paragraph

Synthesis in Tobacco control, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. "Keep it a secret": Leaked Documents Suggest Philip Morris International, and Its Japanese Affiliate, Continue to Exploit Science for Profit.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Article
  6. Recent Developments Relevant to Debates Around the Dissemination of Industry-Funded Science.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
    Article
  7. Article
  8. Review
  9. What Can Current Biomarker Data Tell Us About the Risks of Lung Cancer Posed by Heated Tobacco Products?Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
    Article
  10. Article
  11. Particle emissions from heated tobacco products.Tobacco prevention & cessation · 2024
    Article
  12. Review
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

5 authors.

Sophie BraznellDepartment for Health, University of Bath, Bath, UK seb91@bath.ac.uk.ORCID 0000-0001-7443-2795
Amber Van Den AkkerDepartment for Health, University of Bath, Bath, UK.
Chris MetcalfeBristol Medical School: Population Health Sciences, University of Bristol, Bristol, UK.
Gemma M J TaylorAddiction and Mental Health Group (AIM), Department of Psychology, University of Bath, Bath, UK.
Jamie Hartmann-BoyceCentre for Evidence-Based Medicine, University of Oxford Division of Public Health and Primary Health Care, Oxford, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo critically assess the methodological characteristics and quality of interventional clinical trials investigating the effects of heated tobacco products (HTPs). DATA SOURCES: Web of Science (Core collection and MEDLINE), Scopus, MedRxiv, ClinicalTrials.gov and ICTRP trial databases and transnational HTP manufacturer online publication libraries were searched for clinical trials on HTPs published between January 2010 and April 2022. STUDY SELECTION: Interventional clinical trials of any design, in which at least one group of adult participants used a currently marketed HTP, were selected by two reviewers with good or very good agreement. DATA EXTRACTION: Data relating to trial characteristics and effects of intervention on primary outcomes were extracted using a predesigned form. Risk of bias was assessed using Cochrane's Risk of Bias tool v1. DATA SYNTHESIS: 40 trials were included, 29 of which were tobacco industry affiliated. Methodological characteristics, such as registration, design, setting, comparator interventions, participants, outcomes and analyses, varied between trials, though there were few significant differences between industry-affiliated and independent trials. Of the 40 trials, 33 were judged to be at high risk of bias and 6 at unclear risk of bias. Trial findings were not significantly associated with either affiliation or risk of bias.

conclusionsThe conduct and reporting of HTP interventional clinical trials were poor in many respects and limited to investigating effects of short-term exposure. These trials fall short of what is needed to determine whether HTPs are beneficial to public health, meaning they may not be a sound basis for tobacco control policy decisions.

Indexed as

Clinical Trials as TopicTobacco ProductsHot TemperatureHumansResearch DesignHarm ReductionNon-cigarette tobacco productsTobacco industry

Identifiers

PMID36347620
PMCPMC11041615

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.