ArticleBMJ open2022
Purchasing of tobacco-related and e-cigarette-related products within prisons before and after implementation of smoke-free prison policy: analysis of prisoner spend data across Scotland, UK.
Article in BMJ open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- A systematic review and network meta-analysis of population-level interventions to tackle smoking behaviour.Nature human behaviour · 2024Pooled it
- Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
objectivesTo examine the effect of smoke-free prison policy implementation in November 2018 on purchasing patterns in the prison canteen (shop).
designInterrupted time series.
settingAll 12 closed, publicly run prisons in Scotland, UK.
participantsPeople in custody (PiC) between August 2018 and end of March 2019 (n=11 944).
interventionsImplementation of smoke-free prisons policy. OUTCOME MEASURES: Total spent on all products, nicotine-related products, and food and beverage products per week.
methodsCanteen data were provided for the period July 2018-September 2019 by the Scottish Prison Service. In a series of generalised linear mixed effects models, the amount spent before and after implementation of smoke-free prison policy was compared for all purchases in the time period, and for PiC identified as 'smokers' and 'non-smokers' from their pre-implementation tobacco purchasing patterns.
resultsThe amount spent on nicotine-related products significantly decreased from pre-implementation to post implementation (incident rate ratio (IRR) 0.40; 99% CI 0.33 to 0.51, p<0.001). However, total canteen spend did not change over the study period (IRR 0.92; 99% CI 0.84 to 1.00). Post implementation about 25% of previous 'smokers' total canteen spend was on nicotine-related products. The amount spent by previous 'smokers' on food and beverages increased from £8.67 (99% CI 8.23 to 9.13) pre-implementation to £10.24 in the post implementation period (99% CI 9.58 to 10.90).
conclusionAlthough the amount of money previous 'smokers' in prison spent on nicotine-related products decreased after smoke-free policy, nicotine products still account for a large proportion of canteen spend among PiC in smoke-free prisons in Scotland. Results indicate that many PiC may continue to use nicotine in smoke-free prisons where e-cigarettes are permitted.
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