Evidence map›Paper›PMID 19654578›Full record

ArticleBritish journal of cancer2009

Differences in the risk of cervical cancer and human papillomavirus infection by education level.

S Franceschi, M Plummer, G Clifford, S de Sanjose, X Bosch, R Herrero, N Muñoz, S Vaccarella, International Agency for Research on Cancer Multicentric Cervical Cancer Study Groups, International Agency for Research on Cancer Human Papillomavirus Prevalence Surveys Study Group

Abstract readMulticenter Study
In one paragraph

Article in British journal of cancer, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

35 citing papers in PubMed, 2 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.

S FranceschiInternational Agency for Research on Cancer, 69372 Lyon cedex 08, France. franceschi@iarc.fr
M Plummer
G Clifford
S de Sanjose
X Bosch
R Herrero
N Muñoz
S Vaccarella
International Agency for Research on Cancer Multicentric Cervical Cancer Study Groups
International Agency for Research on Cancer Human Papillomavirus Prevalence Surveys Study Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCervical cancer risk is associated with low education even in an unscreened population, but it is not clear whether human papillomavirus (HPV) infection follows the same pattern.

methodsTwo large multicentric studies (case-control studies of cervical cancer and HPV prevalence survey) including nearly 20 000 women. GP5+/GP6+ PCR was used to detect HPV.

resultsEducation level was consistently associated with cervical cancer risk (odds ratio (OR) for 0 and >5 years vs 1-5 years=1.50, 95% confidence interval (CI): 1.25-1.80 and 0.69, 95% CI: 0.57-0.82, respectively, P for trend <0.0001). In contrast, no association emerged between education level and HPV infection in either of the two IARC studies. A majority of the women studied had never had a Pap smear. The association between low education level and cervical cancer was most strongly attenuated by adjustment for age at first sexual intercourse and first pregnancy. Parity and screening history (but not lifetime number of sexual partners, husband's extramarital sexual relationships, and smoking) also seemed to be important confounding factors.

conclusionThe excess of cervical cancer found in women with a low socio-economic status seems, therefore, not to be explained by a concomitant excess of HPV prevalence, but rather by early events in a woman's sexually active life that may modify the cancer-causing potential of HPV infection.

Indexed as

AdolescentAdultCase-Control StudiesEducational StatusFemaleHumansOdds RatioPapillomaviridaePapillomavirus InfectionsRegression AnalysisRisk FactorsUterine Cervical Neoplasms

Identifiers

PMID19654578
PMCPMC2736843

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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.