Evidence map›Paper›PMID 10741994›Full record

ArticleBMJ (Clinical research ed.)2000

Relation between income inequality and mortality in Canada and in the United States: cross sectional assessment using census data and vital statistics.

N A Ross, M C Wolfson, J R Dunn, J M Berthelot, G A Kaplan, J W Lynch

Abstract read
In one paragraph

Article in BMJ (Clinical research ed.), 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 2 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

118 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Income inequality and life expectancy in Canada: New evidence from province-level panel regression, 1996-2019.Canadian journal of public health = Revue canadienne de sante publique · 2025
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  9. Socioeconomic Classes among Oldest-Old Women in South Korea: A Latent Class Analysis.International journal of environmental research and public health · 2021
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58 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

N A RossStatistics Canada, Ottawa, ON, Canada K1A 0T6. rossnan@statcan.ca
M C Wolfson
J R Dunn
J M Berthelot
G A Kaplan
J W Lynch

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo compare the relation between mortality and income inequality in Canada with that in the United States.

designThe degree of income inequality, defined as the percentage of total household income received by the less well off 50% of households, was calculated and these measures were examined in relation to all cause mortality, grouped by and adjusted for age.

settingThe 10 Canadian provinces, the 50 US states, and 53 Canadian and 282 US metropolitan areas.

resultsCanadian provinces and metropolitan areas generally had both lower income inequality and lower mortality than US states and metropolitan areas. In age grouped regression models that combined Canadian and US metropolitan areas, income inequality was a significant explanatory variable for all age groupings except for elderly people. The effect was largest for working age populations, in which a hypothetical 1% increase in the share of income to the poorer half of households would reduce mortality by 21 deaths per 100 000. Within Canada, however, income inequality was not significantly associated with mortality.

conclusionsCanada seems to counter the increasingly noted association at the societal level between income inequality and mortality. The lack of a significant association between income inequality and mortality in Canada may indicate that the effects of income inequality on health are not automatic and may be blunted by the different ways in which social and economic resources are distributed in Canada and in the United States.

Indexed as

CensusesMortalityCanadaCross-Sectional StudiesHumansIncomeSocioeconomic FactorsUnited States

Identifiers

PMID10741994
PMCPMC27328

What OpenQuestion holds

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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.