Evidence map›Paper›PMID 16731670›Full record

ArticleSexually transmitted infections2006

Incidence of severe reproductive tract complications associated with diagnosed genital chlamydial infection: the Uppsala Women's Cohort Study.

N Low, M Egger, J A C Sterne, R M Harbord, F Ibrahim, B Lindblom, B Herrmann

Open access · bronzeAbstract read
In one paragraph

Article in Sexually transmitted infections, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 4 pooled it
7.6field-weighted citation impact, top 2% 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

44 citing papers in PubMed, 4 syntheses or guidelines pooled it, 160 citations in OpenAlex.

  1. Pooled it
  2. Recommendation on screening for chlamydia and gonorrhea in primary care for individuals not known to be at high risk.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2021
    Guideline
  3. Pooled it
  4. Guideline
  5. Trial
  6. Trial
  7. Trial
  8. Trial
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  10. Review
  11. Reproductive tract complication risks followingThe Lancet regional health. Europe · 2024
    Article
  12. Microorganisms · 2023
    Review
  13. Association between serumFrontiers in public health · 2023
    Article
  14. Article
  15. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2021
    Article
  16. Article
  17. Article
  18. Relation betweenSexually transmitted infections · 2019
    Article
  19. Ten years transmission of the new variant ofSexually transmitted infections · 2018
    Article
  20. Article
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

7 authors at 1 institution in 1 country.

N LowDepartment of Social and Preventive Medicine, University of Bern, Finkenhubelweg 11, Bern, CH-3012, Switzerland. low@ispm.unibe.ch
M Egger
J A C Sterne
R M Harbord
F Ibrahim
B Lindblom
B Herrmann
Institute of Social and Preventive Medicine · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo estimate the cumulative incidence of severe complications associated with genital chlamydia infection in the general female population.

methodsThe Uppsala Women's Cohort Study was a retrospective population based cohort study in Sweden, linking laboratory, hospital, and population registers. We estimated the cumulative incidence of hospital diagnosed pelvic inflammatory disease, ectopic pregnancy, and infertility, and used multivariable regression models to estimate hazard ratios according to screening status.

resultsWe analysed complete data from 43 715 women in Uppsala aged 15-24 years between January 1985 and December 1989. Follow up until the end of 1999 included 709 000 woman years and 3025 events. The cumulative incidence of pelvic inflammatory disease by age 35 years was 3.9% (95% CI 3.7% to 4.0%) overall: 5.6% (4.7% to 6.7%) in women who ever tested positive for chlamydia, 4.0% (3.7% to 4.4%) in those with negative tests, and 2.9% (2.7% to 3.2%) in those who were never screened. The corresponding figures were: for ectopic pregnancy, 2.3% (2.2% to 2.5%) overall, 2.7% (2.1% to 3.5%), 2.0% (1.8% to 2.3%), and 1.9% (1.7% to 2.1%); and for infertility, 4.1% (3.9% to 4.3%) overall, 6.7% (5.7% to 7.9%), 4.7% (4.4% to 5.1%), and 3.1% (2.8% to 3.3%). Low educational attainment was strongly associated with the development of all outcomes.

conclusionsThe incidence of severe chlamydia associated complications estimated from ours, and other population based studies, was lower than expected. Studies that incorporate data about pelvic inflammatory disease diagnosed in primary care and behavioural risk factors would further improve our understanding of the natural history of chlamydia. Our results provide reassurance for patients, but mean that the benefits of chlamydia screening programmes might have been overestimated.

Indexed as

AdolescentAdultChlamydia InfectionsEpidemiologic MethodsFemaleGenital Diseases, FemaleHospitalizationHumansIncidenceMass ScreeningSweden

Identifiers

PMID16731670
PMCPMC2576723
OpenAlexW2162764233

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.