Evidence map›Paper›PMID 32710865›Full record

Observational studyThe Lancet. Global health2020

Liberal trade policy and food insecurity across the income distribution: an observational analysis in 132 countries, 2014-17.

Pepita Barlow, Rachel Loopstra, Valerie Tarasuk, Aaron Reeves

Abstract readObservational Study
In one paragraph

Observational study in The Lancet. Global health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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

12 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. The Measurement of Food Insecurity in High-Income Countries: A Scoping Review.International journal of environmental research and public health · 2021
    Article
  9. Article
  10. Article
  11. Review
  12. Winners and losers in the global trade in food.The Lancet. Global health · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Pepita BarlowDepartment of Health Policy, London School of Economics, London, UK; Bennett Institute for Public Policy, University of Cambridge, Cambridge, UK. Electronic address: p.barlow@lse.ac.uk.
Rachel LoopstraDepartment of Nutritional Sciences, King's College London, London, UK.
Valerie TarasukDepartment of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Aaron ReevesInternational Inequalities Institute, London School of Economics, London, UK; Department of Social Policy and Intervention, University of Oxford, Oxford, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEradicating food insecurity is necessary for achieving global health goals. Liberal trade policies might increase food supplies but how these policies influence individual-level food insecurity remains uncertain. We aimed to assess the association between liberal trade policies and food insecurity at the individual level, and whether this association varies across country-income and household-income groups.

methodsFor this observational analysis, we combined individual-level data from the Food and Agricultural Organization of the UN with a country-level trade policy index from the Konjunkturforschungsstelle Swiss Economic Institute. We examined the association between a country's trade policy score and the probability of individuals reporting moderate-severe or severe food insecurity using regression models and algorithmic weighting procedures. We controlled for multiple covariates, including gross domestic product, democratisation level, and population size. Additionally, we examined heterogeneity by country and household income.

resultsOur sample comprised 460 102 individuals in 132 countries for the period of 2014-17. Liberal trade policy was not significantly associated with moderate-severe or severe food insecurity after covariate adjustment. However, among households in high-income countries with incomes higher than US$25 430 per person per year (adjusted for purchasing power parity), a unit increase in the trade policy index (more liberal) corresponded to a 0·07% (95% CI -0·10 to -0·04) reduction in the predicted probability of reporting moderate-severe food insecurity. Among households in the lowest income decile (<$450 per person per year) in low-income countries, a unit increase in the trade policy index was associated with a 0·35% (0·06 to 0·60) increase in the predicted probability of reporting moderate-severe food insecurity.

interpretationThe relationship between liberal trade policy and food insecurity varied across countries and households. Liberal trade policy was predominantly associated with lower food insecurity in high-income countries but corresponded to increased food insecurity among the world's poorest households in low-income countries.

fundingJoseph Rowntree Foundation, Economic and Social Research Council.

Indexed as

CommercePolicyFood SupplyGlobal HealthHumansIncome

Identifiers

PMID32710865
PMCPMC7375794

What OpenQuestion holds

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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.