The impact of implementation of a national smoke-free prisons policy on indoor air quality: results from the Tobacco in Prisons study

Semple, S., Dobson, R., Sweeting, H. , Brown, A. and Hunt, K. (2019) The impact of implementation of a national smoke-free prisons policy on indoor air quality: results from the Tobacco in Prisons study. Tobacco Control, (doi:10.1136/tobaccocontrol-2018-054895) (PMID:31064866) (Early Online Publication)

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Abstract

Objective: To determine secondhand smoke (SHS) concentrations in prisons during the week of implementation of a new, national prisons smoke-free policy. Design: Repeated measurement of SHS concentrations immediately before and after implementation of smoke-free policies across all 15 prisons in Scotland, and comparison with previously gathered baseline data from 2016. Methods: Fine particulate matter (PM2.5) measurements at a fixed location over a continuous 6-day period were undertaken at the same site in each prison as previously carried out in 2016. Outdoor air quality data from the nearest local authority measurement station were acquired to determine the contribution of outdoor air pollution to indoor prison measurement of PM2.5. Results: Air quality improved in all prisons comparing 2016 data with the first full working day postimplementation (overall median reduction −81%, IQR −76% to −91%). Postimplementation indoor PM2.5 concentrations were broadly comparable with outdoor concentrations suggesting minimal smoking activity during the period of measurement. Conclusions: This is the first evaluation of changes in SHS concentrations across all prisons within a country that has introduced nationwide prohibition of smoking in prisons. All prisons demonstrated immediate substantial reductions in PM2.5 following policy implementation. A smoke-free prisons policy reduces the exposure of prison staff and prisoners to SHS.

Item Type:Articles
Status:Early Online Publication
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hunt, Professor Kate and Brown, Ms Ashley and Sweeting, Dr Helen
Authors: Semple, S., Dobson, R., Sweeting, H., Brown, A., and Hunt, K.
College/School:College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > Health Economics and Health Technology Assessment
College of Medical Veterinary and Life Sciences > Institute of Health and Wellbeing > MRC/CSO SPHSU
Journal Name:Tobacco Control
Publisher:BMJ Publishing Group
ISSN:0964-4563
ISSN (Online):1468-3318
Published Online:07 May 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Tobacco Control 2019
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
727641SPHSU Core Renewal: Setting and Health Improvement Research ProgrammeKathryn HuntMedical Research Council (MRC)MC_UU_12017/12IHW - MRC/CSO SPHU
SPHSU12

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