Evidence map›Paper›PMID 29574449›Full record

ArticleTobacco control2019

Price, tax and tobacco product substitution in Zambia: findings from the ITC Zambia Surveys.

Michal Stoklosa, Fastone Goma, Nigar Nargis, Jeffrey Drope, Grieve Chelwa, Zunda Chisha, Geoffrey T Fong

Abstract read
In one paragraph

Article in Tobacco control, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Cigarette Prices and Smoking Experimentation Among Zimbabwean Children: A Survival Analysis of the 2014 Global Youth Tobacco Survey.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024
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  10. Cigarette Prices and Smoking Among Youth in 16 African Countries: Evidence From the Global Youth Tobacco Survey.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2022
    Article
  11. Article
  12. Review
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  15. Legal Steps to Secure the Tobacco Supply Chain: A Case Study of Poland.International journal of environmental research and public health · 2020
    Article
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  18. Effects of Prices on Youth Cigarette Smoking and Tobacco Use Initiation in Ghana and Nigeria.International journal of environmental research and public health · 2019
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  19. Article
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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

7 authors.

Michal StoklosaEconomic and Health Policy Research, American Cancer Society, Atlanta, Georgia, USA.
Fastone GomaSchool of Medicine, University of Zambia, Lusaka, Zambia.
Nigar NargisEconomic and Health Policy Research, American Cancer Society, Atlanta, Georgia, USA.
Jeffrey DropeEconomic and Health Policy Research, American Cancer Society, Atlanta, Georgia, USA.
Grieve ChelwaGraduate School of Business, University of Cape Town, Cape Town, South Africa.
Zunda ChishaSchool of Economics, University of Cape Town, Cape Town, South Africa.
Geoffrey T FongDepartment of Psychology, University of Waterloo, Waterloo, Ontario, Canada.

Funding

The Political Economy of Tobacco Farming in Low-and Middle-Income CountriesR01TW010898 · FIC · UNIVERSITY OF ILLINOIS AT CHICAGO · PI DROPE, JEFFREY · 2017 to 2021
$1.5M
CIHR FDN-148477CIHR MOP-115016FIC NIH HHS R01 TW010898
6 · The paper itself

Abstract

backgroundIn Zambia, the number of cigarette users is growing, and the lack of strong tax policies is likely an important cause. When adjusted for inflation, levels of tobacco tax have not changed since 2007. Moreover, roll-your-own (RYO) tobacco, a less-costly alternative to factory-made (FM) cigarettes, is highly prevalent. DATA AND

methodsWe modelled the probability of FM and RYO cigarette smoking using individual-level data obtained from the 2012 and 2014 waves of the International Tobacco Control (ITC) Zambia Survey. We used two estimation methods: the standard estimation method involving separate random effects probit models and a method involving a system of equations (incorporating bivariate seemingly unrelated random effects probit) to estimate price elasticities of FM and RYO cigarettes and their cross-price elasticities.

resultsThe estimated price elasticities of smoking prevalence are -0.20 and -0.03 for FM and RYO cigarettes, respectively. FM and RYO are substitutes; that is, when the price of one of the products goes up, some smokers switch to the other product. The effects are stronger for substitution from FM to RYO than vice versa.

conclusionsThis study affirms that increasing cigarette tax with corresponding price increases could significantly reduce cigarette use in Zambia. Furthermore, reducing between-product price differences would reduce substitution from FM to RYO. Since RYO use is associated with lower socioeconomic status, efforts to decrease RYO use, including through tax/price approaches and cessation assistance, would decrease health inequalities in Zambian society and reduce the negative economic consequences of tobacco use experienced by the poor.

Indexed as

AdolescentAdultCigarette SmokingCommerceConsumer BehaviorFemaleHumansMaleMiddle AgedTaxesTobacco ProductsYoung AdultZambiaeconomicspricepublic policytaxation

Identifiers

PMID29574449
PMCPMC6428617

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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.