Evidence map›Paper›PMID 22389880›Full record

ArticleAnnals of laboratory medicine2012

Comparison of sputum and nasopharyngeal swab specimens for molecular diagnosis of Mycoplasma pneumoniae, Chlamydophila pneumoniae, and Legionella pneumophila.

Min-Chul Cho, Hyewon Kim, Dongheui An, Miyoung Lee, Shin-Ae Noh, Mi-Na Kim, Young Pil Chong, Jun Hee Woo

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Annals of laboratory medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Diagnostic Accuracy of Serological Tests forAnnals of laboratory medicine · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. A real-time PCR assay for the quantification ofJournal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Respiratory pathogen diversity and co-infections in rural Zambia.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Diagnostic performance of multiplex PCR on pulmonary samples versus nasopharyngeal aspirates in community-acquired severe lower respiratory tract infections.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2018
    Article
  18. Review
  19. Article
  20. Respiratory infections in elderly people: Viral role in a resident population of elderly care centers in Lisbon, winter 2013-2014.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2018
    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

8 authors at 3 institutions in 1 country.

Min-Chul ChoDepartment of Laboratory Medicine, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea.
Hyewon Kim
Dongheui An
Miyoung Lee
Shin-Ae Noh
Mi-Na Kim
Young Pil Chong
Jun Hee Woo
University of Ulsan · KRAsan Medical Center · KRUlsan College · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDifferentiation of atypical pathogens is important for community-acquired pneumonia (CAP). In this study, we compared sputum and nasopharyngeal swabs (NPS) for use in detection of Mycoplasma pneumoniae (MP), Chlamydophila pneumoniae (CP), and Legionella pneumophila (LP), using Seeplex PneumoBacter ACE Detection Assay (PneumoBacter; Seegene).

methodsSputum and NPS specimens were collected from patients in 15 hospitals. DNA was extracted from sputum using QIAamp DNA Stool Mini Kit (Qiagen) and from NPS using easyMAG (bioMérieux). Both types of specimens were evaluated by multiplex PCR using PneumoBacter. To determine the diagnostic performance of this assay, sputum samples were also tested using BD ProbeTec ET Atypical Pneumonia Assay (APA; Becton Dickinson).

resultsAmong 217 sputum and NPS, 20 (9.2%), 2 (0.9%), and 0 sputum were positive for MP, LP, and CP, respectively, whereas 8 (3.7%) NPS were positive for MP. The sputum APA test yielded 186, 206, and 204 interpretable results for MP, LP, and CP, respectively. Of these, 21 (11.3%) were positive for MP, 2 (1.0%) were positive for LP, and 0 samples were positive for CP. Compared to APA, the sensitivity and specificity of the sputum assay for MP were 95.2% and 100.0%, respectively, whereas for the NPS assay, these were 38.1% and 93.9%. Sputum testing was more sensitive than NPS testing (P=0.002). For LP and CP diagnosis, PneumoBacter and APA tests agreed 100%.

conclusionsSpecimen type is crucial and sputum is preferred over NPS for simultaneous detection of MP, LP, and CP using multiplex PCR in CAP.

Indexed as

Chlamydophila InfectionsChlamydophila pneumoniaeCommunity-Acquired InfectionsDNA, BacterialHumansLegionella pneumophilaLegionnaires' DiseaseMultiplex Polymerase Chain ReactionMycoplasma pneumoniaeNasopharynxPneumonia, MycoplasmaReagent Kits, DiagnosticSputumDNA, BacterialReagent Kits, DiagnosticAtypical pneumoniaChlamydophila pneumoniaeLegionella pneumophilaMycoplasma pneumoniaeNasopharyngeal swabPolymerase chain reactionSputum

Identifiers

PMID22389880
PMCPMC3289778
OpenAlexW2095603299

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.