Evidence map›Paper›PMID 26118887›Full record

SynthesisEpidemiology and infection2015

Second-hand smoke and the risk of tuberculosis: a systematic review and a meta-analysis.

O F Dogar, N Pillai, N Safdar, S K Shah, R Zahid, K Siddiqi

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Epidemiology and infection, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 3 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Is secondhand smoke exposure associated with poor periodontal status in children and adolescents? A systematic review and meta-analysis.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2022
    Pooled it
  2. Pooled it
  3. Effectiveness of interventions for reducing TB incidence in countries with low TB incidence: a systematic review of reviews.European respiratory review : an official journal of the European Respiratory Society · 2019
    Pooled it
  4. Children Learning About Secondhand Smoke (CLASS II): A Pilot Cluster Randomized Controlled Trial.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2019
    Trial
  5. Review
  6. Review
  7. Indoor Air Pollution and Susceptibility to Tuberculosis Infection in Urban Vietnamese Children.American journal of respiratory and critical care medicine · 2021
    Article
  8. Article
  9. Smoked Tobacco, Air Pollution, and Tuberculosis in Lao PDR: Findings from a National Sample.International journal of environmental research and public health · 2019
    Article
  10. Review
  11. Review
  12. Article
  13. 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 1 institution in 1 country.

O F DogarDepartment of Health Sciences,University of York,UK.
N PillaiDepartment of Health Sciences,University of York,UK.
N SafdarSocial and Health Inequalities Network (SHINe),Non-Governmental Organization,Islamabad,Pakistan.
S K ShahDepartment of Health Sciences,University of York,UK.
R ZahidThe Initiative,Non-Governmental Organization,Islamabad,Pakistan.
K SiddiqiDepartment of Health Sciences,University of York,UK.
University of York · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is limited evidence and lack of consensus whether second-hand smoke (SHS) increases risk of tuberculosis (TB), which has substantial implications for unrestricted smoking indoors and TB control policies. We aimed to establish the association between SHS and the risk of acquiring and worsening of TB in non-smokers. We identified 428 articles in the initial search and 12 comparative epidemiological studies met our inclusion criteria. Exposure to SHS was found to have a higher risk of TB infection [risk ratio (RR) 1·19, 95% confidence interval (CI) 0·90-1·57] compared to non-exposure; however, this did not reach statistical significance. There was marked variability (I 2 = 74%, P = 0·0008) between studies' results, which could be explained by the differences in the diagnostic criteria used. Exposure to SHS was found to be statistically significantly associated (RR 1·59, 95% CI 1·11-2·27) with the risk of TB disease. There was significant heterogeneity (I 2 = 77%, P = 0·0006) between studies' results, which was sourced to the internal characteristics of the studies rather than combining different study designs. We did not find any studies for SHS and TB treatment-related outcomes. Thus, we conclude that SHS exposure may increase the risk of acquiring TB infection and progression to TB disease; however, the evidence remains scanty and weak.

Indexed as

HumansRiskTobacco Smoke PollutionTuberculosis, PulmonaryTobacco Smoke PollutionLow- and middle-income countriespassive smokingtobacco

Identifiers

PMID26118887
PMCPMC9150979
OpenAlexW2280203823

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.