Evidence map›Paper›PMID 25967987›Full record

ArticleBMJ open2015

What is the association of smoking and alcohol use with the increase in social inequality in mortality in Denmark? A nationwide register-based study.

Mette Bjerrum Koch, Finn Diderichsen, Morten Grønbæk, Knud Juel

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.2field-weighted citation impact, top 9% of its field
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

22 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. The rising income gradient in life expectancy in Sweden over six decades.Proceedings of the National Academy of Sciences of the United States of America · 2025
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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

4 authors at 2 institutions in 1 country.

Mette Bjerrum KochNational Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark.
Finn DiderichsenDepartment of Public Health, University of Copenhagen, Copenhagen, Denmark.
Morten GrønbækNational Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark.
Knud JuelNational Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark.
University of Southern Denmark · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe aim of this paper is to estimate the impact of smoking and alcohol use on the increase in social inequality in mortality in Denmark in the period 1985-2009.

designA nationwide register-based study.

settingDenmark.

participantsThe whole Danish population aged 30 years or more in the period 1985-2009. PRIMARY AND SECONDARY OUTCOME MEASURES: The primary outcome is mortality rates in relation to educational attainments calculated with and without deaths related to smoking and alcohol use. An absolute measure of inequality in mortality is applied along with a result on the direct contribution from smoking and alcohol use on the absolute difference in mortality rates. The secondary outcome is life expectancy in relation to educational attainments.

resultsSince 1985, Danish overall mortality rates have decreased. Alongside the improvement in mortality, the absolute difference in the mortality rate (per 100,000 persons) between the lowest and the highest educated quartile grew from 465 to 611 among men and from 250 to 386 among women. Smoking and alcohol use have caused 75% of the increase among men and 97% of the increase among women. Among men the increase was mainly caused by alcohol. In women the increase was mainly caused by smoking.

conclusionsThe main explanation for the increase in social inequality in mortality since the mid-1980s is smoking and alcohol use. A significant reduction in the social inequality in mortality can only happen if the prevention of smoking and alcohol use are targeted to the lower educated part of the Danish population.

Indexed as

Health Status DisparitiesAdultAgedAlcohol DrinkingDenmarkEducational StatusFemaleHumansIncomeLife ExpectancyMaleMiddle AgedRegistriesRisk FactorsSmokingSocioeconomic FactorsEPIDEMIOLOGYPUBLIC HEALTH

Identifiers

PMID25967987
PMCPMC4431124
OpenAlexW2142583469

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.