evidence/gaps
Primary study · included by 3 reviews

Secondhand smoke and incidence of dental caries in deciduous teeth among children in Japan: population based retrospective cohort study.

Tanaka S et al., 2015 · Tanaka Shiro, Shinzawa Maki, Tokumasu Hironobu, et al. · BMJ (Clinical research ed.) · 2015

PubMed 26489750doi:10.1136/bmj.h5397Journal Article; Research Support, Non-U.S. Gov't

Trial PICO

Not extracted yet. Trial-level population, intervention, comparator, outcomes and design will appear here after the trial extraction run. Until then, the reviews below describe the study.

Results

Not extracted yet. Per-trial results (events, means, effect and weight as each review's forest plot reports them) will appear here after the trial extraction run.

Included by

Association between passive tobacco exposure and caries in children and adolescents. A systematic review and meta-analysis.
Non-Cochrane · aetiology · 2018 · cited as Tanaka S et al., 2015 · Table 1; Table 2; Reference 40 (meta-analyzed; overall forest Fig 2)
Outcome this study informsPooled effectEvidenceCertainty
Dental caries (presence; primary or permanent dentition)
Passive tobacco exposure (prenatal maternal smoking or postnatal secondhand/household smoke) vs No passive tobacco exposure (non-exposed children)
OR 1.528 [1.394, 1.676]21 studiesUngraded
Correlation Between Maternal Smoking During Pregnancy and Dental Caries in Children: A Systematic Review and Meta-Analysis.
Non-Cochrane · aetiology · 2021 · cited as Tanaka S et al. 2015 · Table 1; Table 2; Reference [23]

The review does not say which of its outcomes this study informs.

Secondary Smoking and Early Childhood Caries: A Systematic Review and Meta-Analysis.
Non-Cochrane · aetiology · 2025 · cited as Tanaka 2015 · Table 2 (cohort studies); Figure 3 (forest plot)
Outcome this study informsPooled effectEvidenceCertainty
Caries incidence (early childhood caries)
Secondary (passive/secondhand) smoking exposure during childhood vs No secondary smoking exposure · Caries incidence by age 3 years (exposure from infancy, 4-18 months)
RR 1.45 [1.41, 1.49]2 studies · 102,830 participantsLow

Also linked to PM39395896-P2-O1, which does not match a current question in this review.

3 including reviews in total.