Evidence map›Paper›PMID 29848905›Full record

ArticleJournal of epidemiology2019

Does Cigarette Smoking Increase Traffic Accident Death During 20 Years Follow-up in Japan? The Ibaraki Prefectural Health Study.

Ayaka Igarashi, Jun Aida, Toshimi Sairenchi, Toru Tsuboya, Kemmyo Sugiyama, Shihoko Koyama, Yusuke Matsuyama, Yukihiro Sato, Ken Osaka, Hitoshi Ota

Abstract read
In one paragraph

Article in Journal of epidemiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

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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

10 authors.

Ayaka IgarashiDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.ORCID http://orcid.org/0000-0002-8745-4130
Jun AidaDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.ORCID http://orcid.org/0000-0002-8405-9872
Toshimi SairenchiDepartment of Public Health, Dokkyo Medical University School of Medicine.ORCID http://orcid.org/0000-0001-8896-6501
Toru TsuboyaDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.
Kemmyo SugiyamaDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.
Shihoko KoyamaDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.ORCID http://orcid.org/0000-0002-7786-4910
Yusuke MatsuyamaDepartment of Global Health Promotion, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU).ORCID http://orcid.org/0000-0002-6114-5604
Yukihiro SatoDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.
Ken OsakaDepartment of International and Community Oral Health, Tohoku University Graduate School of Dentistry.
Hitoshi OtaIbaraki Health Plaza.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnnually, more than 1.2 million deaths due to road traffic accidents occur worldwide. Although previous studies have examined the association between cigarette smoking and injury death, the mortality outcome often included non-traffic accident-related deaths. This study aimed to examine the association between cigarette smoking and traffic accident death.

methodsWe conducted a prospective cohort study using data from the Ibaraki Prefectural Health Study conducted from 1993 through 2013. The cohort included 97,078 adults (33,138 men and 63,940 women) living in Ibaraki Prefecture who were aged 40-79 years at an annual health checkup in 1993. We divided participants into four smoking status groups: non-smokers, ex-smokers, and current smokers who smoked <20 and ≥20 cigarettes per day. Hazard ratios (HRs) of traffic accident death were calculated using a Cox proportional hazards model.

resultsDuring 20 years of follow-up, the average person-years of follow-up were 16.8 and 18.2 in men and women, respectively. Among men, after adjusting for age and alcohol intake, HRs for traffic accident death among current smokers of <20 cigarettes/day and ≥20 cigarettes/day compared to non-smokers were 1.32 (95% confidence interval [CI], 0.79-2.20) and 1.54 (95% CI, 0.99-2.39), respectively. In contrast, among women, we found no association between smoking status and traffic accident deaths.

conclusionIn this prospective cohort study, we found a positive association, though marginally significant, between smoking and traffic accident death among men in Japan. Among women, because of the smaller number of deaths among smokers, adequate estimation could not be obtained.

Indexed as

Accidents, TrafficAdultAgedCigarette SmokingFemaleFollow-Up StudiesHumansJapanMaleMiddle AgedProportional Hazards ModelsProspective StudiesRisk FactorsSex Distributioncigarettecohort studysmokingtraffic accident

Identifiers

PMID29848905
PMCPMC6445801

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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.