Evidence map›Paper›PMID 30515111›Full record

ReviewFrontiers in psychiatry2018

Evidence of a Causal Relationship Between Smoking Tobacco and Schizophrenia Spectrum Disorders.

James G Scott, Lori Matuschka, Solja Niemelä, Jouko Miettunen, Brett Emmerson, Antti Mustonen

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in psychiatry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

25 citing papers in PubMed, 73 citations in OpenAlex.

  1. Nicotine use and psychoticism: A longitudinal co-twin control analysis.Journal of psychopathology and clinical science · 2026
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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 5 institutions in 2 countries.

James G ScottFaculty of Medicine, The University of Queensland, Herston, QLD, Australia.
Lori MatuschkaFaculty of Medicine, The University of Queensland, Herston, QLD, Australia.
Solja NiemeläFaculty of Medicine, University of Turku, Turku, Finland.
Jouko MiettunenCenter for Life Course Health Research, University of Oulu, Oulu, Finland.
Brett EmmersonFaculty of Medicine, The University of Queensland, Herston, QLD, Australia.
Antti MustonenCenter for Life Course Health Research, University of Oulu, Oulu, Finland.
Oulu University Hospital · FIQueensland Centre for Mental Health Research · AURoyal Brisbane and Women's Hospital · AUUniversity of Queensland · AUUniversity of Turku · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There has been emerging evidence of an association between tobacco smoking and schizophrenia spectrum disorders (SSD). Two meta-analyses have reported that people who smoke tobacco have an ~2-fold increased risk of incident schizophrenia or psychosis, even after adjusting for confounding factors. This study aimed to critically appraise the research which has examined the association between tobacco smoking and SSD against the Bradford Hill criteria for causality, to determine the strength of the evidence for a causal relationship. Eight longitudinal studies (seven cohort studies and one case control study) were identified which examined tobacco smoking as an exposure and psychosis as an outcome. All seven cohort studies were assessed as being of high quality using the Newcastle-Ottawa Scale. Six of the eight studies found a statistically significant positive association between tobacco smoking and onset of SSD. These studies reported a consistent association with a moderate to large effect size and a dose response relationship. The studies adjusted for multiple potential confounders including age, sex, socioeconomic status, shared genetic risk, prodromal symptoms, and comorbid cannabis and other substance use. The studies did not adjust for exposure to childhood trauma or prenatal tobacco. There was substantial though inconclusive evidence supporting a causal relationship between tobacco smoking and increased risk of SSD. If a causal relationship does exist, nicotine is most likely responsible for this association. This raises serious public health concerns about the increasing use of e-cigarettes and other products, particularly by adolescents whose nicotine use may increase their risk of SSD. Research is urgently needed to examine the association between e-cigarette use and incident psychosis, particularly in adolescents and young adults.

Indexed as

associationcausale-cigarettenicotinepsychosisschizophreniasmoking

Identifiers

PMID30515111
PMCPMC6255982
OpenAlexW2901119435

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.