Evidence map›Paper›PMID 33455614›Full record

ArticlePublic health nutrition2021

Impact of sugar-sweetened beverage taxes on price, import and sale volumes in an island: interrupted time series analysis.

Andrea M Teng, Murat Genç, Josephine Herman, Louise Signal, Danny Areai, Nick Wilson

Abstract read
In one paragraph

Article in Public health nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

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

  1. Pooled it
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  3. Article
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

6 authors.

Andrea M TengDepartment of Public Health, University of Otago Wellington, 23 Mein Street, PO Box 7343, Wellington, New Zealand.ORCID 0000-0002-6116-3941
Murat GençDepartment of Economics, University of Otago, Dunedin, New Zealand.
Josephine HermanTe Marae Ora Cook Islands Ministry of Health, Avarua, Cook Islands, New Zealand.
Louise SignalDepartment of Public Health, University of Otago Wellington, 23 Mein Street, PO Box 7343, Wellington, New Zealand.
Danny AreaiTe Marae Ora Cook Islands Ministry of Health, Avarua, Cook Islands, New Zealand.
Nick WilsonDepartment of Public Health, University of Otago Wellington, 23 Mein Street, PO Box 7343, Wellington, New Zealand.ORCID 0000-0002-5118-0676

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate the impact of changes in import tariffs on sweetened beverages.

designInterrupted time series analysis was used to examine sweetened beverage tariff increases of 40-60 % in 2008 and to 75 % in 2012, and an approximately 11 % decrease in 2014 when an excise tax replaced the tariff. Post-tax trends were compared with a counterfactual modelled on the pre-tax trend for: quarterly price of an indicator beverage, monthly beverage import volumes (both 2001-2017) and quarterly sales volumes (2012-2017). In a controlled analysis, taxed beverage imports were compared with a sugary snacks control.

settingCook Islands.

participantsNA.

resultsIn the first year, after the 2008 tariff increase the price of the selected indicator soft drink increased by 7·3 % (95 % CI 6·3 %, 8·3 %) but after the 2012 tariff increase it decreased by 13·9 % (95 % CI -14·9 %, -12·8 %). At the same time, the import volumes of taxed beverages decreased by 13·2 % (95 % CI -38·1 %, 17·8 %) and 2·9 % (95 % CI -41·6 %, 72·5 %), respectively, and decreased by 24·8 % (95 % CI -36·9, -9·8) and 10·2 % (95 % CI -37·1, 37·5) in the controlled analysis. After the 2014 tax decrease, the price of the indicator soft drink decreased by 23·6 % (95 % CI -26·0 %, -21·1 %), sweetened beverage imports increased by 4·5 % (95 % CI -39·5 %, 156·0 %) and sales of full-sugar soft drinks increased by 31 % (95 % CI -21 %, 243 %).

conclusionsThe increased import tariffs on sweetened beverages appeared to be effective for reducing import volumes, but this was partly reversed by the reduced tax/tariff in 2014.

Indexed as

Sugar-Sweetened BeveragesBeveragesCommerceHumansInterrupted Time Series AnalysisTaxesCook IslandsExcisePacificSoft drinksSugary drinksTariffTax

Identifiers

PMID33455614
PMCPMC10195599

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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.