Evidence map›Paper›PMID 25329578›Full record

ArticlePloS one2014

Linking of primary care records to census data to study the association between socioeconomic status and cancer incidence in Southern Europe: a nation-wide ecological study.

Maria Garcia-Gil, Josep-Maria Elorza, Marta Banque, Marc Comas-Cufí, Jordi Blanch, Rafel Ramos, Leonardo Méndez-Boo, Eduardo Hermosilla, Bonaventura Bolibar, Daniel Prieto-Alhambra

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In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 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.

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3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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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

10 authors.

Maria Garcia-GilResearch Unit, Family Medicine, Girona, Spain, and Jordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain; Translab Research Group, Department of Medical Sciences, School of Medicine, University of Girona, Catalunya, Spain.
Josep-Maria ElorzaJordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain.
Marta BanqueCancer Prevention Unit and Cancer Registry, Department of Epidemiology and Evaluation, Hospital del Mar, Barcelona, Catalunya, Spain.
Marc Comas-CufíResearch Unit, Family Medicine, Girona, Spain, and Jordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain.
Jordi BlanchResearch Unit, Family Medicine, Girona, Spain, and Jordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain.
Rafel RamosPrimary Care Services, Girona, Spain, and Catalan Institute of Health (ICS), Catalunya, Spain.
Leonardo Méndez-BooPrimary Care Information System, Catalan Institute of Health (ICS), Catalunya, Spain.
Eduardo HermosillaJordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain.
Bonaventura BolibarJordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain.
Daniel Prieto-AlhambraJordi Gol Institute for Primary Care Research (IDIAP Jordi Gol), Catalunya, Spain; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundArea-based measures of economic deprivation are seldom applied to large medical records databases to establish population-scale associations between deprivation and disease.

objectiveTo study the association between deprivation and incidence of common cancer types in a Southern European region.

methodsRetrospective ecological study using the SIDIAP (Information System for the Development of Research in Primary Care) database of longitudinal electronic medical records for a representative population of Catalonia (Spain) and the MEDEA index based on urban socioeconomic indicators in the Spanish census. Study outcomes were incident cervical, breast, colorectal, prostate, and lung cancer in 2009-2012. The completeness of SIDIAP cancer recording was evaluated through linkage of a geographic data subset to a hospital cancer registry. Associations between MEDEA quintiles and cancer incidence was evaluated using zero-inflated Poisson regression adjusted for sex, age, smoking, alcoholism, obesity, hypertension, and diabetes.

resultsSIDIAP sensitivity was 63% to 92% for the five cancers studied. There was direct association between deprivation and lung, colorectal, and cervical cancer: incidence rate ratios (IRR) 1.82 [1.64-2.01], IRR 1.60 [1.34-1.90], IRR 1.22 [1.07-1.38], respectively, comparing the most deprived to most affluent areas. In wealthy areas, prostate and breast cancers were more common: IRR 0.92 [0.80-1.00], IRR 0.91 [0.78-1.06]. Adjustment for confounders attenuated the association with lung cancer risk (fully adjusted IRR 1.16 [1.08-1.25]), reversed the direction of the association with colorectal cancer (IRR 0.90 [0.84-0.95]), and did not modify the associations with cervical (IRR 1.27 [1.11-1.45]), prostate (0.74 [0.69-0.80]), and breast (0.76 [0.71-0.81]) cancer.

conclusionsDeprivation is associated differently with the occurrence of various cancer types. These results provide evidence that MEDEA is a useful, area-based deprivation index for analyses of the SIDIAP database. This information will be useful to improve screening programs, cancer prevention and management strategies, to reach patients more effectively, particularly in deprived urban areas.

Indexed as

CensusesElectronic Health RecordsPrimary Health CareSocial ClassAdolescentAdultAge DistributionDatabases, FactualFemaleHumansIncidenceMaleMiddle AgedNeoplasmsRetrospective StudiesSex Distribution

Identifiers

PMID25329578
PMCPMC4203762

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.