Evidence map›Paper›PMID 20562627›Full record

ArticleEpidemiology (Cambridge, Mass.)2010

Estimating the proportion of pneumonia attributable to pneumococcus in Kenyan adults: latent class analysis.

Jukka Jokinen, J Anthony G Scott

Abstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Prevalence, Antimicrobial Resistance, and Associated Factors ofThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2022
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Addressing the Analytic Challenges of Cross-Sectional Pediatric Pneumonia Etiology Data.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2017
    Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Effect of antimicrobial use on pneumococcal diagnostic tests in elderly patients with community-acquired pneumonia.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2015
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Use of a rapid test of pneumococcal colonization density to diagnose pneumococcal pneumonia.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2012
    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

2 authors.

Jukka JokinenDepartment of Vaccination and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland.
J Anthony G Scott

Funding

Wellcome Trust 061089Wellcome Trust 081835
6 · The paper itself

Abstract

backgroundCommunity-acquired pneumonia is a common cause of hospitalization among African adults, and Streptococcus pneumoniae is assumed to be a frequent cause. Pneumococcal conjugate vaccine is currently being introduced into childhood immunization programs in Africa. The case for adult vaccination is dependent on the contribution of the pneumococcus to the hospital pneumonia burden.

methodsPneumococcal diagnosis is complex because there is no gold standard, and culture methods are invalidated by antibiotic use. We used latent class analysis to estimate the proportion of pneumonia episodes caused by pneumococcus. Furthermore, we extended this methodology to evaluate the effect of antimicrobial treatment on test accuracies and the prevalence of the disease. The study combined data from 5 validation studies of pneumococcal diagnostic tests performed on 281 Kenyan adults with pneumonia.

resultsThe proportion of pneumonia episodes attributable to pneumococcus was 0.46 (95% confidence interval = 0.36-0.57). Failure to account for the effect of antimicrobial exposure underestimates this proportion as 0.32. A history of antibiotic exposure was a poor predictor of antimicrobial activity in patients' urine. Blood culture sensitivity for pneumococcus was estimated at 0.24 among patients with antibiotic exposure, and 0.75 among those without.

conclusionsThe large contribution of pneumococcus to adult pneumonia provides a strong case for the investigation of pneumococcal vaccines in African adults.

Indexed as

AdultAnti-Bacterial AgentsChi-Square DistributionConfidence IntervalsHumansKenyaLikelihood FunctionsMicrobiological TechniquesModels, StatisticalPneumoniaPneumonia, PneumococcalSensitivity and SpecificitySerotypingAnti-Bacterial Agents

Identifiers

PMID20562627
PMCPMC2923075

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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.